Electrochemistry Castle Learning Questions
A diagram of a chemical cell and an equation are shown below. https://cl.castlelearning.com/Review/CLO/courses/Chem/q1739-1.gif When the switch is closed, electrons will flow from 1. the Pb(s) to the Cu(s) 2. the Cu(s) to the Pb(s) 3. the Pb2+(aq) to the Pb(s) 4. the Cu2+(aq) to the Cu(s)
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As an atom of nitrogen gains electrons, its oxidation number 1. decreases 2. increases 3. remains the same
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which is the balanced half reaction equation for the reduction of Al3+ to Al? 1. Al3+ + 3e- --> Al 2. Al3+ --> Al + 3e- 3. Al + 3e- --> Al3+ 4. Al --> Al3+ + 3e-
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which term identifies the half reaction that occurs at the anode of an operating electrochemical cell? 1. oxidation 2. reduction 3. neutralization 4. transmutation
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Base your answer to the question on the diagram and balanced equation, which represent the electrolysis of molten NaCl. https://cl.castlelearning.com/Review/CLO/Courses/chem/q2173.gif?v=20060213114358 When the switch is closed, which electrode will attract the sodium ions? 1. the anode 2. the cathode 3. both the anode and the cathode
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Base your answer to the question on the information and diagram. The apparatus shown in the diagram consists of two inert platinum electrodes immersed in water. A small amount of an electrolyte, H2SO4, must be added to the water for the reaction to take place. The electrodes are connected to a source that supplies electricity. https://cl.castlelearning.com/Review/CLO/Courses/chem/q2249.gif?v=20061212054018 What type of electrochemical cell is shown? 1. oxidation cell 2. electrolytic cell 3. reduction cell 4. voltaic cell
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Given the balanced equation: 3Fe3+(aq) + Al(s) → 3Fe2+(aq) + Al3+(aq) What is the total number of moles of electrons lost by 2 moles of Al(s)? 1. 1 mole 2. 6 moles 3. 3 moles 4. 9 moles
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In any redox reaction, a reactant can undergo a decrease in oxidation number by 1. losing electrons, only 2. gaining electrons, only 3. losing protons, only 4. gaining protons, only
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which procedure requires the use of an external electric current to force a redox reaction to occur? 1. polymerzation 2. distillation 3. electrolysis 4. saponification
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2KClO3 --> 2KCl + 3O2 The oxidation state of chlorine in this reaction changes from 1. -1 to +1 2. -1 to +5 3. +1 to -1 4. +5 to -1
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2Mg + O2 --> 2MgO Magnesium is the 1. oxidizing agent and is reduced 2. oxidizing agent and is oxidized 3. reducing agent and is reduced 4. reducing agent and is oxidized
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Which term best describes this reaction? Sn4+ + 2e- --> Sn2+ 1. ionization 2. neutralization 3. oxidation 4. reduction
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Which type of reaction involved the transfer of electrons? 1. alpha decay 2. double replacement 3. neutralization 4. oxidation-reduction
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an electrolytic cell is different from a voltaic cell because in an electrolytic cell 1. a redox reaction occurs 2. a spontaneous reaction occurs 3. an electric current is produced 4. an electric current causes a chemical reaction
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what is the oxidation number of chromium in K2Cr2O7? 1. +12 2. +2 3. +3 4. +6
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what is the purpose of the salt bridge in a voltaic cell? 1. block the flow of electrons 2. block the flow of + and - ions 3. path for the flow of electrons 4. path for the flow of + and - ions
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when a neutral atom undergoes oxidation, the atoms oxidation state 1. decreases as it gains electrons 2. decreases as it loses electrons 3. increases as it gains electrons 4. increases as it loses electrons
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which equation shows conservation of both mass and charge? 1. Cl2 + Br- --> Cl- + Br2 2. Cu + 2Ag+ --> Cu2+ + Ag 3. Zn + Cr3+ --> Zn2+ + Cr 4. Ni + Pb2+ --> Ni2+ + Pb
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which process requires an external power source? 1. neutralization 2. synthesis 3. fermentation 4. electrolysis
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Which species undergoes reduction? 2Al + Fe2O3 --> Al2O3 + 2Fe 1. Al 2. Fe 3. Al3+ 4. Fe3+
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Base your answer to the question on the diagram of the voltaic cell. https://cl.castlelearning.com/Review/CLO/courses/Chem/q1845.gif Based on the given equation, the balanced half-reaction that occurs in half-cell 1 is 1. Pb(s) → Pb2+(aq) + 2e− 2. 2Ag(s) → 2Ag+(aq) + 2e− 3. Pb2+(aq) + 2e− → Pb(s) 4. 2Ag+(aq) + 2e− → Ag(s)
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Cr3+ + Al --> Cr + Al3+ As the reaction takes place, there is a transfer of 1. electrons from Al to Cr3+ 2. electrons from Cr3+ 3. protons from Al to Cr3+ 4. protons from Cr3+ to Al
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Given the balanced equation representing a reaction 2Al + 3Cu2+ --> 2Al3+ + 3Cu What particles are transferred in this reaction? 1. electrons 2. neutrons 3. positrons 4. protons
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Given the reaction: 2Li(s) + Cl2(g) → 2LiCl(s) As the reaction takes place, the Cl2(g) will 1. gain electrons 2. lose electrons 3. gain protons 4. lose protons
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Given the reaction: Cu(s) + 2Ag+(aq) → Cu2+(aq) + 2Ag(s) Which statement correctly indicates the change that occurs? 1. One mole of Cu(s) loses a total of 2 moles of electrons. 2. One mole of Cu(s) gains a total of 1 mole of electrons. 3. Two moles of Ag+(aq) loses a total of 2 moles of electrons. 4. Two moles of Ag+(aq) gains a total of 1 mole of electrons.
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Given the reaction: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) The oxidation number of Zn(s) increases because it 1. loses electrons 2. gains electrons 3. loses protons 4. gains protons
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Given the redox reaction: 2I-(aq) + Br2(l) → 2Br-(aq) + I2(s) What occurs during this reaction? 1. The I- ion is oxidized, and its oxidation number increases. 2. The I- ion is oxidized, and its oxidation number decreases. 3. The I- ion is reduced, and its oxidation number increases. 4. The I- ion is reduced, and its oxidation number decreases
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In a redox reaction which particles are lost and gained in equal numbers? 1. electrons 2. neutrons 3. hydroxide ions 4. hydronium ions
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In the chemical reaction: Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s), which species is oxidized? 1. Zn(s) 2. Cu2+(aq) 3. Cu(s) 4. Zn2+(aq)
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In the reaction Pb + 2Ag+ --> Pb2+ + @Ag, the oxidizing agent is 1. Ag+ 2. Ag 3. Pb 4. Pb2+
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Oxygen will have a positive oxidation number when combined with 1. fluorine 2. chlorine 3. bromine 4. iodine
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Pb + 2Ag+ --> Pb2+ + 2Ag In this reaction, the Ag+ is 1. reduced and the oxidation changed from +1 to 0 2. reduced and the oxidation number changed from +2 to 0 3. oxidized and the oxidation number changed from 0 to +1 4. oxidized and the oxidation number changed from +1 to 0
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The diagram represents a chemical cell at 298 K. https://cl.castlelearning.com/Review/CLO/courses/chem/c69696.gif When the switch is closed, electrons flow from 1. Al(s) to Ni(s) 2. Ni(s) to Al(s) 3. Al3+(aq) to Ni2+(aq) 4. Ni2+(aq) to Al3+(aq)
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What is the oxidation number assigned to manganese in KMnO4? 1. +7 2. +2 3. +3 4 +4
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What is the oxidation number of chromium in the chromate ion, CrO4²⁻? 1. +6 2. +2 3. +3 4. +8
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What is the oxidation number of manganese in KMnO4? 1. +7 2. +2 3. +3 4. +4
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What is the oxidation state for a Mn atom? 1. 0 2. +7 3. +3 4. +4
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Which balanced equation represents a redox reaction? 1. Mg + Cl2 --> MgCl2 2. CaO + H2O --> Ca(OH)2 3. HNO3 + NaOH --> NaNO3 + H2O 4. NaCl + AgNO3 --> AgCl + NaNO3
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Which change in oxidation number indicated oxidation? 1. -1 to +2 2. -1 to -2 3. -2 to -3 4. +3 to +2
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Which species undergoes oxidation? Mg + 2H+ + 2Cl- --> Mg2+ + 2Cl- + H2 1. Mg 2. H+ 3. Cl- 4. h2
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Which statement correctly describes a redox reaction? 1. oxidation and reduction occur simultaneously 2. oxidation happens before reduction 3. oxidation happens after reduction 4. oxidation is spontaneous but reduction is not
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Which substance undergoes oxidation? 2Na + 2H2O --> 2NaOH + H2 1. Na 2. NaOH 3. H2 4. H2O
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Which type of cell does the diagram represent? https://cl.castlelearning.com/Review/CLO/courses/chem/C89292.gif 1. electrolytic, anode at A 2. electrolytic, cathode at A 3. voltaic, anode at A 4. voltaic, cathode at A
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based on table j, which two reactants react spontaneously? 1. Mg + ZnCl2 2. Cu + FeSO4 3. Pb + ZnCl2 4. Co + NaCl
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during the operation of a voltaic cell, the cell produces 1. electrical energy spontaneously 2. chemical energy spontaneously 3. electrical energy nonspontaneously 4. chemical energy nonspontaneously
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in an electrolytic cell, the positive electrode is the 1. anode where oxidation occurs 2. anode where reduction occurs 3. cathode where oxidation occurs 4. cathode where reduction occurs
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oxidation in an electrolytic cell takes place at the 1. anode which is positive 2. anode which is negative 3. cathode which is positive 4. cathode which is negative
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which balanced equation represents a redox reaction? 1. Mg + Cl2 --> MgCl2 2. Cao + H2O --> Ca(OH)2 3. HNO3 + NaOH --> NaNO3 + H2O 4. NaCl + AgNO3 --> AgCl + NaNO3
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which energy conversion must occur in an operating electrolytic cell? 1. electrical --> chemical 2. electrical --> nuclear 3. chemical --> electrical 4. chemical --> nuclear
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In which substance is the oxidation number of Cl equal to +1? 1. Cl2 2. Cl2O 3. AlCl3 4. HClO2
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The diagram below represents an operating voltaic cell at 298 K and 1.0 atmosphere in a laboratory investigation. The reaction occurring in the cell is represented by the balanced ionic equation below. https://cl.castlelearning.com/Review/CLO/Courses/chem/q3155.gif?v=20110201025750 Identify the anode in this cell. 1. Ag(s) 2. Ni(s) 3. Ag+(aq) 4. Ni2+(aq)
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The diagram below shows a key being plated with copper in an electrolytic cell. https://cl.castlelearning.com/Review/CLO/courses/Chem/q1836.gif Given the reduction reaction for this cell: Cu2+(aq) + 2e− → Cu(s) This reduction occurs at 1. A, which is the anode 2. A, which is the cathode 3. B, which is the anode 4. B, which is the cathode
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The diagram represents a chemical cell at 298 K and 1 atmosphere. https://cl.castlelearning.com/Review/CLO/Courses/chem/c89195.gif?v=20010107123910 When switch S is closed, electrons in the external circuit will flow from 1. Zn to Zn2+ 2. Zn to Cu 3. Cu to Zn2+ 4. Cu to Zn
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The diagram represents a voltaic cell. https://cl.castlelearning.com/Review/CLO/Courses/chem/c69392.gif?v=20010107123554 When the switch is closed, which group of letters correctly represents the direction of electron flow? 1. A → B → C → D 2. A → F → E → D 3. D → C → B → A 4. D → F → E → A
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The diagram represents the electroplating of a metal fork with Ag(s). https://cl.castlelearning.com/Review/CLO/Courses/chem/c69295.gif?v=20010107123516 Which part of the electroplating is represented by the fork? 1. the anode, which is the negative electrode 2. the cathode, which is the negative electrode 3. the anode, which is the positive electrode 4. the cathode, which is the positive electrode
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The oxidation number of a reducing agent can change from 1. -1 to -3 2. -2 to -1 3. 3 to -1 4. 4 to -3
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What is the oxidation number of sulfur in Na2S2O3? 1. -1 2. +2 3. +6 4. +4
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What is the oxidizing agent? Fe + Sn4+ --> Fe2+ + Sn2+ 1. Fe 2. Sn4+ 3. Fe2+ 4. Sn2+
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What occurs at one of the electrodes in both an electrolytic cell and a voltaic cell? 1. oxidation occurs as electrons are gained at the cathode 2. oxidation occurs as electrons are lost at the anode 3. reduction occurs as electrons are gained at the anode 4. reduction occurs as electrons are lost at the cathode
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What statement is true about this reaction? 2Al + 3Cu2+ --> Al3+ + 3Cu 1. Each Al loses 2e- and each Cu2+ gains 3e-. 2. Each Al loses 3e- and each Cu2+ gains 2e-. 3. Each Al3+ gains 2e- and each Cu loses 3e-. 4. Each Al3+ gains 3e- and each Cu loses 2e-.
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Which changes occur when Pt2+ is reduced? 1. The Pt2+ gains electrons and its oxidation number increases. 2. The Pt2+ gains electrons and its oxidation number decreases. 3. The Pt2+ loses electrons and its oxidation number increases. 4. The Pt2+ loses electrons and its oxidation number decreases.
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Which is the oxidizing agent? 2Fe3+ + 2I- --> 2Fe2+ + I2 1. Fe2+ 2. Fe3+ 3. I- 4. I2
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Which species undergoes reduction? C +H2O --> CO + H2 1. C 2. H+ 3. C2+ 4. H2
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a battery consists of which type of cells? 1. electrolytic 2. voltaic 3. electroplating 4. electromagnetic
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in an operating voltaic cell, reduction occurs 1. at the anode 2. at the cathode 3. in the salt bridge 4. in the wire
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what is the oxidation number of iodine in NaIO3? 1. +1 2. +5 3. +3 3. +6
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which energy transformation occurs when an electrolytic cell is in operation? 1. chemical --> electrical 2. electrical --> chemical 3. light --> heat 4. light --> chemical
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which half reaction equation represents the reduction of an iron(II) ion? 1. Fe2+ --> Fe3+ + e- 2. Fe2+ + 2e- --> Fe 3. Fe3+ + e- --. Fe2+ 4. Fe --> Fe2+ + 2e-
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which half reaction shows conservation of charge? 1. Cu + e --> Cu+ 2. Cu2+ 2e- --> Cu 3. Cu+ --> Cu + e- 4. Cu2+ --> Cu + 2e-
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which process occurs at the anode in an electrochemical cell? 1. loss of protons 2. loss of electrons 3. gain of protons 4. gain of electrons
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which process occurs in an operating voltaic cell? 1. electrical energy is converted to chemical energy 2. chemical energy is converted to electrical energy 3. oxidation takes place at the cathode 4. reduction takes place at the anode
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which statement describes one characteristic of an operating electrolytic cell? 1. it produces electrical energy 2. it requires an external energy source 3. it uses radioactive nuclides 4. it undergoes a spontaneous redox reaction
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write a balanced half reaction equation for the oxidation that occurs. 1. Mg2+ + 2e- --> mg 2. Mg --> Mg2+ + 2e- 3. Cl2 --> 2Cl- + 2e- 4. 2Cl- + 2e- --> Cl2
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2Al3⁺ ₊ 3Mg→ 3Mg²⁺₊ 2Al In this reaction, electrons are transferred from 1. Al to Mg²⁺ 2. Al³⁺ to Mg 3. Mg to Al³⁺ 4. Mg2+ to Al
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A compound is broken down by chemical means during 1. chromatography 2. distillation 3. electrolysis 4. filtration
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An oxidation-reduction reaction involves the 1. sharing of electrons 2. sharing of protons 3. transfer of electrons 4. transfer of protons
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Given the balanced equation representing a reaction: Fe2O3 + 2Al → Al2O3 + 2Fe During this reaction, the oxidation number of Fe changes from: 1. +2 to 0 as electrons are transferred 2. +2 to 0 as protons are transferred 3. +3 to 0 as electrons are transferred 4. +3 to 0 as protons are transferred
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Given the balanced equation representing the reaction occurring in a voltaic cell: Zn(s) + Pb2+(aq) → Zn2+(aq) + Pb(s) In the completed external circuit, the electrons flow from 1. Pb(s) to Zn(s) 2. Pb2+(aq) to Zn2+(aq) 3. Zn(s) to Pb(s) 4. Zn2+(aq) to Pb2+(aq)
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In which cubstance does chlorine have an oxidation number of +1? 1. Cl2 2. HCl 3. HClO 4. HClO2
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Migration of ions takes place through the 1. anode 2. cathode 3. salt bridge 4. external circuit
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The diagram represents a chemical cell at 298 K and 1 atmosphere. https://cl.castlelearning.com/Review/CLO/Courses/chem/c89195.gif?v=20010107123910 Which species represents the cathode? 1. Zn 2. Zn2+ 3. Cu 4. Cu2+
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The diagram represents a voltaic cell. https://cl.castlelearning.com/Review/CLO/Courses/chem/c69392.gif?v=20010107123554 Which statement correctly describes the direction of flow for the ions in this cell when the switch is closed? 1. Ions move through the salt bridge from B to C, only. 2. Ions move through the salt bridge from C to B, only. 3. Ions move through the salt bridge in both directions. 4. Ions do not move through the salt bridge in either direction
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What happens to reducing agents in chemical reactions? 1. reducing agents gain protons 2. reducing agents gain electrons 3. reducing agents are oxidized. 4. reducing agents are reduced
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What is the oxidation number of iodine in KIO4? 1. +1 2. -1 3. +7 4. -7
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What is the oxidation state of nitrogen in NaNo2? 1. +1 2. +2 3. +3 4. +4
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What is the oxidation state of nitrogen in the compound NH4Br? 1. -1 2. +2 3. -3 4. +4
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When a voltaic cell operates, ions move through the 1. anode 2. cathode 3. salt bridge 4. external circuit
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Which half-reaction can occur at the anode in a voltaic cell? 1. Ni2+ + 2e- → Ni 2. Sn + 2e- → Sn2+ 3. Zn → Zn2+ + 2e- 4. Fe3+ → Fe2+ + e-
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Which species acts as a reducing agent in Fe2+ Zn -->Zn2+ + Fe 1. Fe 2. Fe2+ 3. Zn 4. Zn2+
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Which statement describes electrolysis? 1. chemical energy is used to produce a electrical change 2. chemical energy is used to produce a thermal change 3. electrical energy is used to produce a chemical change 4. thermal energy is used to produce a chemical change
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Which statement describes where the oxidation and reduction half-reactions occur in an operating electrochemical cell? 1. Oxidation and reduction both occur at the anode. 2. Oxidation and reduction both occur at the cathode. 3. Oxidation occurs at the anode, and reduction occurs at the cathode. 4. Oxidation occurs at the cathode, and reduction occurs at the anod
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Write the balanced half reaction for the reduction that occurs in this electrolytic cell 1. Ck2 + 2e- --> 2Cl- 2. Cl2 --> 2Cl- 3. 2Na+ + 2e_ --> 2Na 4. 2Na+ --> 2Na + 2e-
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a voltaic cell converts chemical energy to 1. electrical energy with an external power source 2. nuclear energy with an external power source 3. electrical energy without an external power source 4. nuclear energy without an external power source
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at which electrode does oxidation occur in a voltaic cell and in an electrolytic cell? 1. anode in voltaic, cathode in electrolytic 2. cathode in voltaic, anode in electrolytic 3. anode in both 4. cathode in both
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reduction occurs at the cathode in 1. electrolytic cells only 2. voltaic cells only 3. both electrolytic cells and voltaic cells 4. neither
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the chemical process in which electrons are gained by an atom or an ion is called 1. addition 2. oxidation 3. reduction 4. substitution
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which atom forms an ion that would migrate toward the cathode in an electrolytic cell? 1. F 2. I 3. Na 4. Cl
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which ionic equation is balanced? 1. Fe3+ + Al --> Fe2+ + Al3+ 2. Fe3+ + 3Al --> Fe2+ + 3Al3+ 3. 3Fe3+ + Al --> 3Fe2+ + Al3+ 4. 3Fe3+ + Al --> Fe2+ + 3Al3+
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A student collects the materials and equipment below to construct a voltaic cell. two 250-mL beakers wire and a switch one strip of magnesium one strip of copper 125 mL of 0.20 M Mg(NO3)2(aq) 125 mL of 0.20 M Cu(NO3)2(aq) Which additional item is required for the construction of the voltaic cell? 1. an anode 2. a battery 3. a cathode 4. a salt bridge
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An electrolytic cell differs from a voltaic cell because an electrolytic cell 1. generates its own energy from a spontaneous physical reaction 2. generates its own energy from a nonspontaneous physical reaction 3. requires an outside energy source for a spontaneous chemical reaction to occur 4. requires an outside energy source for a nonspontaneous chemica
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Base your answer to the question on the information and diagram. The apparatus shown in the diagram consists of two inert platinum electrodes immersed in water. A small amount of an electrolyte, H2SO4, must be added to the water for the reaction to take place. The electrodes are connected to a source that supplies electricity. https://cl.castlelearning.com/Review/CLO/Courses/chem/q2249.gif?v=20061212054018 What particles provided by the electrolyte allow an electric current to flow? 1. atoms 2. protons 3. neutrons 4. ions
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Given the balanced equation representing a reaction occurring in an electrolytic cell: 2NaCl(image) → 2Na(image) + Cl2(g) Where is Na(image) produced in the cell? 1. at the anode, where oxidation occurs 2. at the anode, where reduction occurs 3. at the cathode, where oxidation occurs 4. at the cathode, where reduction occurs
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Given the reaction: Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO3(g) + 2H2O(l ) As the reaction occurs, what happens to copper? 1. It undergoes reduction and its oxidation number decreases. 2. It undergoes reduction and its oxidation number increases. 3. It undergoes oxidation and its oxidation number decreases. 4. It undergoes oxidation and its oxidation number increases.
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In an oxidation reduction reaction, reduction is defined as the 1. loss of protons 2. gain of protons 3. loss of electrons 4. gain of electrons
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In which compound does carbon have an oxidation state of -4? 1. CO 2. CO2 3. CCl4 4. CH4
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In which compound does chlorine have the highest oxidation number? 1. NaClO 2. NaClO2 3. NaClO3 3. NaClO4
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In which substance does hydrogen have an oxidation number of zero? 1. LiH 2. H2O 3. H2S 4. H2
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In which substance does sulfur have an oxidation state of +4? 1. H2S 2. S 3. SO3 4. SO2
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The catalytic converter in an automobile changes harmful gases produced during fuel combustion to less harmful exhaust gases. In the catalytic converter, nitrogen dioxide reacts with carbon monoxide to produce nitrogen and carbon dioxide. In addition, some carbon monoxide reacts with oxygen, producing carbon dioxide in the converter. These reactions are represented by the balanced equations below. Reaction 1: 2NO2(g) + 4CO(g) →N2(g) + 4CO2(g) + 1198.4 kJ Reaction 2: 2CO(g) + O2(g) →2CO2(g) + 566.0 kJ Determine the oxidation number of carbon in each carbon compound in reaction 2. 1. CO: +4, CO2: +4 2. CO: +2, CO2: +2 3. CO: +4, CO2: - 4 4. CO: +2, CO2: +4
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The diagram below represents an operating electrochemical cell and the balanced ionic equation for the reaction occurring in the cell. https://cl.castlelearning.com/Review/CLO/courses/Chem/q3020.gif Which statement identifies the part of the cell that conducts electrons and describes the direction of electron flow as the cell operates? 1. Electrons flow through the salt bridge from the Ni(s) to the Zn(s). 2. Electrons flow through the salt bridge from the Zn(s) to the Ni(s). 3. Electrons flow through the wire from the Ni(s) to the Zn(s). 4. Electrons flow through the wire from the Zn(s) to the Ni(s).
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The diagram slows the electrolysis of fused KCl. https://cl.castlelearning.com/Review/CLO/courses/chem/C69894.gif What occurs when the switch is closed? 1. Positive ions migrate toward the anode, where they lose electrons. 2. Positive ions migrate toward the anode, where they gain electrons. 3. Positive ions migrate toward the cathode, where they lose electrons. 4. Positive ions migrate toward the cathode, where they gain electrons.
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What is the oxidation number of carbon in NaHCO3? 1. +6 2. +2 3. -4 4. +4
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What is the oxidation number of chlorine in HClO4? 1. +1 2.+5 3.+3 4.+7
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What occurs when Cr3+ ions are reduced to Cr2+ ions? 1. electrons are lost and the oxidation number of chromium increases 2. electrons are lost and the oxidation number of chromium decreases 3. electrons are gained and the oxidation number of chromium increases 4. electrons are gained and the oxidation number of chromium decreases
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When a substance is oxidized, it 1. loses protons 2. gains protons 3. acts as an oxidizing agent 4. acts as a reducing agent
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Where do reduction and oxidation occur in an electrolytic cell? 1. both at the anode 2. both at the cathode 3. reduction at the anode, oxidation at the cathode 4. reduction at the cathode, oxidation at the anode
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Which compound of a voltaic cell is correctly paired with its function? 1. external conductor allows the solutions to mix 2. external conductor allows the migration of ions 3. salt bridge allows the solutions to mix 4. salt bridge allows the migration of ions
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Which reaction occurs at the cathode in an electrochemical cell? 1. combustion 2. oxidation 3. neutralization 4. reduction
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