Chem Exam 3 Review
122) What is the oxidation number of oxygen in H2O2? A) -1 B) -2 C) +1 D) +2 E) -1/2
A) -1
109) The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is __________ V when [Zn2+] = 3.5 M and [Pb2+] = 2.0 × 10-4 M. Pb2+ (aq) + Zn (s) → Zn2+ (aq) + Pb (s) A) 0.50 B) 0.84 C) 0.39 D) 0.76 E) 0.63
A) 0.50
125) What is the coefficient of the dichromate ion when the following equation is balanced? Fe2+ + Cr2O72- → Fe3+ + Cr3+ (acidic solution) A) 1 B) 2 C) 3 D) 5 E) 6
A) 1
85) Alkenes have the general formula __________. A) CnH2n. B) CnH2n-2. C) CnH2n+2 D) CnHn. E) C2nHn.
A) CnH2n.
41) During the formation of a coordination compound, ligands act as __________. A) Lewis bases B) Arrhenius bases C) Br∅nsted bases D) Lewis acids E) Arrhenius acids
A) Lewis bases
34) What are the donor atoms in a porphine molecule? A) N B) O C) S D) Br E) F
A) N
5) Of the following compounds, which is the most stable? A) XeF6 B) XeOF4 C) XeO3 D) XeO2F2 E) XeF2
A) XeF6
23) A mineral is A) a solid inorganic compound that contains one or more metals. B) a vitamin. C) metal in its elemental form. D) a transition metal ion. E) source of carbon.
A) a solid inorganic compound that contains one or more metals.
56) The oxidation of ethanol produces __________. A) acetic acid B) formic acid C) citric acid D) lactic acid E) oxalic acid
A) acetic acid
55) Which one of the following is not an alcohol? A) acetone B) glycerol C) ethanol D) cholesterol E) ethylene glycol
A) acetone
102) Nuclei above the belt of stability can lower their neutron-to-proton ratio by __________. A) beta emission B) gamma emission C) positron emission D) electron capture E) Any of the above processes will lower the neutron-to-proton ratio.
A) beta emission
32) Which of the following is not a chelating agent? A) chloride anion B) EDTA C) porphine D) ethylenediamine E) oxalate anion
A) chloride anion
16) Replacement of CaO by PbO in soda-lime glass results in A) denser glass with a higher refractive index. B) glass with a deep blue color. C) opaque glass. D) a softer glass with a lower melting point. E) a harder glass with a higher melting point
A) denser glass with a higher refractive index.
3) Isotopes of hydrogen A) have the same atomic number and different mass numbers. B) have the same atomic number and the same mass number. C) have different atomic numbers and different mass numbers. D) have different atomic numbers and the same mass number. E) are exactly alike
A) have the same atomic number and different mass numbers.
46) The correct name for [Co(NH3)5Cl]Cl2 is __________. A) pentaaminechlorocobalt(III) chloride B) chloropentaammoniacobalt (II) chloride C) pentaammoniachlorocobalt(II) chloride D) cobalt(III) pentaamino trichloride E) none of the above
A) pentaaminechlorocobalt(III) chloride
11) Which form of elemental sulfur is the most stable at room temperature? A) rhombic sulfur B) monoclinic C) hexagonal D) triclinic E) tetraclinic
A) rhombic sulfur
24) What two oxidation states are more frequently observed in the first transition series than in the third? A) +3 and +7 B) +2 and +3 C) +2 and +7 D) +5 and +6 E) +3 and +5
B) +2 and +3
115) The standard cell potential (E°cell) of the reaction below is -0.34 V. The value of ΔG° for the reaction is __________ kJ/mol. Cu (s) + 2H+ (aq) → Cu2+ (aq) + H2 (g) A) -0.34 B) +66 C) -130 D) +130 E) none of the above
B) +66
19) In metallic hydrides, the oxidation number of hydrogen is considered to be __________. A) -2 B) -1 C) 0 D) +1 E) +2
B) -1
108) A voltaic cell is constructed with two silver-silver chloride electrodes, where the half-reaction is AgCl (s) + e- → Ag (s) + Cl- (aq) E° = +0.222 V The concentrations of chloride ion in the two compartments are 0.0222 M and 2.22 M, respectively. The cell emf is __________ V. A) 0.212 B) 0.118 C) 0.00222 D) 22.2 E) 0.232
B) 0.118
124) What is the coefficient of the permanganate ion when the following equation is balanced? MnO4- + Br- → Mn2+ + Br2 (acidic solution) A) 1 B) 2 C) 3 D) 5 E) 4
B) 2
126) What is the coefficient of Fe3+ when the following equation is balanced? CN- + Fe3+ → CNO- + Fe2+ (basic solution) A) 1 B) 2 C) 3 D) 4 E) 5
B) 2
50) How many isomers are possible for C4H10? A) 1 B) 2 C) 3 D) 4 E) 10
B) 2
28) What is the oxidation number of Ni in [Ni(CN)5]3-? A) 1+ B) 2+ C) 3+ D) 4+ E) 5+
B) 2+
106) The standard emf for the cell using the overall cell reaction below is +2.20 V: 2Al (s) + 3I2 (s) → 2Al3+ (aq) + 6I- (aq) The emf generated by the cell when [Al3+] = 4.5 × 10^-3 M and [I-] = 0.15 M is ________ V. A) 2.20 B) 2.32 C) 2.10 D) 2.39 E) 2.23
B) 2.32
104) How much energy (in J) is produced when 0.082 g of matter is converted to energy? A) 7.4 × 10^18 B) 7.4 × 10^12 C) 2.5 × 10^4 D) 7.4 × 10^15 E) 2.5 × 10^7
B) 7.4 × 10^12
48) Which one of the following could be a cyclic alkane? A) C5H5 B) C3H6 C) C4H6 D) C2H6 E) C9H20
B) C3H6
14) Which of the following would produce the most strongly basic aqueous solution? A) CO B) CO3^2- C) CO2 D) HCO3- E) NaHCO3
B) CO3^2-
58) What is the general formula for a ketone? A) ROR B) R-CO-R' C) RCOOH D) ROH E) RCHO
B) R-CO-R'
17) Soda-lime glass contains A) SiO2 and aluminum B) SiO2, CaO, and Na2O C) SiO2, CO2, and citric acid D) SiO2, CO2, Na2O E) pure SiO2
B) SiO2, CaO, and Na2O
39) Based on the crystal-field strengths Cl- < F- < H2O < NH3 < H2NC2H4NH2, which octahedral Ti(III) complex below has its d-d electronic transition at shortest wavelength? A) [Ti(NH3)6]3+ B) [Ti(H2NC2H4NH2)3]3+ C) [Ti(H2O)6]3+ D) [TiCl6]3- E) [TiF6]3-
B) [Ti(H2NC2H4NH2)3]3+
86) The compound below is an __________. H-C=CH-CH3 A) alkyne B) alkene C) alkane D) aromatic compound E) olefin
B) alkene
74) Proteins are biopolymers formed via multiple condensation coupling of which two functional groups? A) ester and amine B) amine and carboxylic acid C) alcohol and carboxylic acid D) alcohol and amine E) ester and carboxylic acid
B) amine and carboxylic acid
117) In a voltaic cell, electrons flow from the __________ to the __________. A) salt bride, anode B) anode, salt bridge C) cathode, anode D) salt bridge, cathode E) anode, cathode
B) anode, salt bridge
78) Sugars are examples of what type of molecule? A) proteins B) carbohydrates C) nucleic acids D) amino acids E) salts
B) carbohydrates
103) What order process is radioactive decay? A) zeroth B) first C) second D) third E) fourth
B) first
87) Starch, glycogen, and cellulose are made of repeating units of __________. A) lactose B) glucose C) fructose D) sucrose E) amino acids
B) glucose
113) Corrosion of iron is retarded by __________. A) the presence of salts B) high pH conditions C) low pH conditions D) both the presence of salts and high pH conditions E) both the presence of salts and low pH conditions
B) high pH conditions
82) The basic building block of nucleic acids is the __________. A) nucleoside B) nucleotide C) ester linkage D) nitrogen base E) phosphoric acid
B) nucleotide
98) The carbon-14 dating method can be used to determine the age of a A) flint arrowhead. B) papyrus scroll. C) stone axe head. D) clay pot. E) rock.
B) papyrus scroll.
20) Only the most active metals react with oxygen to form __________. A) oxides B) superoxides C) peroxides D) ozonides E) water
B) superoxides
44) The correct name for [Cu(NH3)4(H2O)2]+2 is __________. A) diwaterquatraamminecopper (II) B) tetraamminediaquacopper (II) C) diaquatetraammoniumcopper (II) D) tetraamminecopper (II) dihydrate E) none of the above
B) tetraamminediaquacopper (II)
47) A geometrical isomer with like groups located on opposite sides of the metal atom is denoted with the prefix __________. A) cis- B) trans- C) bis- D) tetrakis- E) d-
B) trans-
112) Galvanized iron is iron coated with __________. A) magnesium. B) zinc. C) chromium. D) phosphate. E) iron oxide.
B) zinc
10) The oxidation state of oxygen in O2F2 is A) 0 B) +2 C) +1 D) -1 E) -2
C) +1
105) A voltaic cell is constructed with two Zn2+-Zn electrodes, where the half-reaction is Zn2+ + 2e- → Zn (s) E° = -0.763 V The concentrations of zinc ion in the two compartments are 5.50 M and 1.11 × 10^-2 M, respectively. The cell emf is __________ V. A) -1.54 × 10^-3 B) -378 C) 0.0798 D) 0.160 E) -0.761
C) 0.0798
111) A voltaic cell is constructed with two Zn2+-Zn electrodes, where the half-reaction is Zn2+ + 2e- → Zn (s) E° = -0.763 V The concentrations of zinc ion in the two compartments are 5.50 M and 1.11 × 10-2 M, respectively. The cell emf is __________ V. A) -1.54 × 10-3 B) -378 C) 0.0798 D) 0.160 E) -0.761
C) 0.0798
107) The standard emf for the cell using the overall cell reaction below is +0.48 V: Zn (s) + Ni2+ (aq) → Zn2+ (aq) + Ni (s) The emf generated by the cell when [Ni2+] = 2.50 M and [Zn2+] = 0.100 M is ________ V. A) 0.40 B) 0.50 C) 0.52 D) 0.56 E) 0.44
C) 0.52
110) The standard cell potential (E°cell) for the reaction below is +1.10 V. The cell potential for this reaction is __________ V when the concentration of [Cu2+] = 1.0 × 10-5 M and [Zn2+] = 3.5 M. Zn (s) + Cu2+ (aq) → Cu (s) + Zn2+ (aq) A) 1.42 B) 1.26 C) 0.94 D) 0.78 E) 1.10
C) 0.94
97) Cesium-131 has a half-life of 9.7 days. What percent of a cesium-131 sample remains after 60 days? A) 100 B) 0 C) 1.4 D) 98.6 E) more information is needed to solve the problem
C) 1.4
51) How many isomers are possible for C5H12? A) 1 B) 2 C) 3 D) 4 E) 10
C) 3
35) A complex of correctly written formula [Pt(NH3)3Br]BrH2O has which set of ligands in its inner coordination sphere? A) 3 NH3 B) 3 NH3 and 2Br- C) 3 NH3 and 1Br- D) 3 NH3, 1Br-, and 1H2O E) 3 NH3, 2Br-, and 1H2O
C) 3 NH3 and 1Br-
30) In the compound, CaNa[Fe(CN)6], what ligands are in the coordination sphere? A) Ca2+ B) Na+ C) CN- D) H2O E) none of the above
C) CN-
80) __________ is a monosaccharide. A) Sucrose B) Maltose C) Glucose D) Lactose
C) Glucose
9) Which of the following react with oxygen to form superoxides? A) Ca B) Na C) K D) Sr E) Ba
C) K
36) Which one of the following is the correct formula for potassium diaquatetrachloromolybdate (III)? A) K2[Mo(H2O)2Cl4] B) K[Mo(H2O)2Cl2]Cl2 C) K[Mo(H2O)2Cl4] D) Mo[K(H2O)2]Cl4 E) K3[Mo(H2O)2Cl4]
C) K[Mo(H2O)2Cl4]
21) The Haber process is used to make __________ from __________. A) HNO3, N2 B) O2, KClO3 C) NH3, N2 D) NO2, O2 E) NO, N2
C) NH3, N2
8) The most stable allotrope of oxygen is __________. A) H2O B) O3 C) O2 D) HClO E) O
C) O2
79) __________ is a disaccharide. A) Glucose B) Galactose C) Sucrose D) Ribose E) Fructose
C) Sucrose
89) What happens to the mass number and the atomic number of an element when it undergoes beta decay? A) Neither the mass number nor the atomic number change. B) The mass number decreases by 4 and the atomic number decreases by 2. C) The mass number does not change and the atomic number increases by 1. D) The mass number does not change and the atomic number decreases by 2. E) The mass number increases by 2 and the atomic number increases by 1.
C) The mass number does not change and the atomic number increases by 1.
123) What is the anode in an alkaline battery? A) MnO2 B) KOH C) Zn powder D) Mn2O3 E) Pt
C) Zn powder
25) The lanthanide contraction is responsible for the fact that A) Zr and Y have about the same radius. B) Zr and Nb have similar oxidation states. C) Zr and Hf have about the same radius. D) Zr and Zn have similar oxidation states. E) Zr and Hf have the same oxidation states
C) Zr and Hf have about the same radius.
8) What is required for a nuclear transmutation to occur? A) very high temperature B) a corrosive environment C) a particle to collide with a nucleus D) spontaneous nuclear decay E) gamma emission
C) a particle to collide with a nucleus
91) Which one of the following processes results in an increase in the atomic number? A) gamma emission B) positron emission C) beta emission D) alpha emission E) corrosion
C) beta emission
18) A borane is a A) compound containing only boron and oxygen. B) compound containing only boron and aluminum. C) compound containing only boron and hydrogen. D) compound containing only boron and carbon. E) three-dimensional covalent network of boron atoms.
C) compound containing only boron and hydrogen.
45) The correct name for [Al(H2O)2(OH-)4]- is __________. A) diwaterquatrahydroxyaluminum B) tetrahydroxydiaquaaluminum (III) C) diaquatetrahydroxoaluminate D) aluminum (IV) hydroxide dihydrate E) none of the above
C) diaquatetrahydroxoaluminate
101) Which one of the following forms of radiation can penetrate the deepest into body tissue? A) alpha B) beta C) gamma D) positron E) proton
C) gamma
75) Which amino acid is not chiral? A) leucine B) isoleucine C) glycine D) alanine E) threonine
C) glycine
100) Which one of the following devices converts radioactive emissions to light for detection? A) Geiger counter B) photographic film C) scintillation counter D) none of the above E) radiotracer
C) scintillation counter
26) Diamagmetic solids __________. A) have atoms with one or more unpaired electrons B) have atoms with randomly oriented magnetic moments C) show very slight magnetic character when placed in a magnetic field D) have atoms with strongly aligned electrons when placed in a magnetic field E) both a and d
C) show very slight magnetic character when placed in a magnetic field
A) the central metal ion only B) the ligands C) the central metal ion and the ligands bonded to it D) the primary and secondary valencies E) coordination and steric numbers
C) the central metal ion and the ligands bonded to it
99) The basis for the carbon-14 dating method is that A) the amount of carbon-14 in all objects is the same. B) carbon-14 is very unstable and is readily lost from the atmosphere. C) the ratio of carbon-14 to carbon-12 in the atmosphere is a constant. D) living tissue will not absorb carbon-14 but will absorb carbon-12. E) All of the above are correct.
C) the ratio of carbon-14 to carbon-12 in the atmosphere is a constant.
121) What is the oxidation number of manganese in MnO2? A) +3 B) +2 C) +1 D) +4 E) +7
D) +4
127) What is the oxidation number of nitrogen in the HNO3? A) -1 B) +1 C) +3 D) +5 E) +7
D) +5
119) 1V = __________. A) 1 amp ∙ s B) 1 J/s C) 96485 C D) 1 J/C E) 1 C/J
D) 1 J/C
114) The standard cell potential (E°cell) of the reaction below is -0.55 V. The value of ΔG° for the reaction is __________ J/mol. I2 (s) + 2Br- (aq) → 2I- (aq) + Br2 (l) A) 0.54 B) 0.55 C) 5.5 × 10^-6 D) 1.1 × 10^5 E) none of the above
D) 1.1 × 10^5
27) The coordination number of cobalt in CoCl3 ∙ 6NH3 is __________. A) 2 B) 3 C) 4 D) 6 E) 8
D) 6
13) What gas has the odor of bitter almonds? A) H2S B) NO2 C) CO D) HCN E) Cl2
D) HCN
54) Alcohols are hydrocarbon derivatives in which one or more hydrogens have been replaced by a hydroxyl functional group. __________ is the general formula of an alcohol. A) ROR B) RCOR C) RCOOH D) ROH E) RCOH
D) ROH
4) How are the oxygen-containing compounds of xenon made? A) by direct combination of the elements B) by reaction of xenon with peroxide C) by thermal decomposition of the xenon hydroxide D) by reaction of the corresponding xenon fluoride with water E) Xenon is inert and does not form compounds with oxygen.
D) by reaction of the corresponding xenon fluoride with water
1) Of the following, the most nonmetallic element is __________. A) carbon B) selenium C) iodine D) fluorine E) phosphorus
D) fluorine
31) A ligand with a single donor atom is called __________. A) a chelon B) a chelate C) polydentate D) monodentate E) bidentate
D) monodentate
84) The molecular geometry of each carbon atom in an alkane is __________. A) octahedral B) square planar C) trigonal planar D) tetrahedral E) trigonal pyramidal
D) tetrahedral
120) What is the oxidation number of manganese in the MnO ion? A) +1 B) +2 C) +5 D) +4 E) +7
E) +7
40) The coordination numbers of cobalt(III) and of chromium(III) in their complexes are always __________. A) 4 B) 5 C) 2 D) 3 E) 6
E) 6
33) The coordination number and oxidation number of the central atom in [Mn(CO)4Br2] are __________ and __________, respectively. A) 4, +1 B) 6, +1 C) 5, +2 D) 4, +2 E) 6, +2
E) 6, +2
92) Of the following processes, which one changes the atomic number? A) alpha emission B) beta emission C) electron capture D) positron emission E) All of these processes change the atomic numbers.
E) All of these processes change the atomic numbers.
7) Which elemental halogen(s) can be used to prepare I2 from NaI? A) F2only B) Cl2 only C) Br2 only D) both Cl2 and Br2, but not F2 E) F2, Cl2, and Br2
E) F2, Cl2, and Br2
2) Water gas is ________. A) H2O and H2 B) CO2 and O2 C) H2O and CO2 D) H2O and CO E) H2 and CO
E) H2 and CO
37) Linkage isomerism would most likely occur when which of the following ligands is present? A) H2O B) NH3 C) Cl- D) PF3 E) NCS-
E) NCS-
22) What is the formula of borax? A) H3BO3 B) H2B4O7 C) P5O8 D) B2O3 E) Na2B4O7∙10H2O
E) Na2B4O7∙10H2O
15) Replacement of Na2O by K2O in soda-lime glass results in A) opaque glass. B) a softer glass with a lower melting point. C) glass with a deep blue color. D) denser glass with a high refractive index. E) a harder glass with a higher melting point.
E) a harder glass with a higher melting point.
29) Changes in the coordination sphere of a complex compound may lead to changes in __________. A) color B) physical properties C) chemical properties D) stability E) all of the above
E) all of the above
6) Interhalogen compounds __________. A) are exceedingly reactive B) contain halogens in both positive and negative oxidation states C) are powerful oxidizing agents D) that contain fluorine are very active fluorinating agents E) all of the above
E) all of the above
76) The tertiary structure of proteins is maintained by __________ bonds. A) hydrogen B) dipole-dipole C) ion-dipole D) covalent E) all of the above
E) all of the above
88) All atoms of a given element have the same __________. A) mass number B) number of nucleons C) atomic mass D) number of neutrons E) atomic number
E) atomic number
81) The principal difference between fructose and glucose is that __________. A) fructose is a disaccharide and glucose is a monosaccharide B) fructose is a monosaccharide and glucose is a disaccharide C) fructose is chiral and glucose is not D) glucose is chiral and fructose is not E) fructose is a ketone sugar and glucose is an aldehyde sugar
E) fructose is a ketone sugar and glucose is an aldehyde sugar
43) The correct name for [Ni(NH3)6](NO3)3 is __________. A) dinitrohexaamminenickel (II) B) hexaamminenickel (III) trinitrate C) dinitrohexaamminenickelate (III) D) hexaamminenickel (II) nitrate E) hexaamminenickel (III) nitrate
E) hexaamminenickel (III) nitrate
83) The double helix of DNA is stabilized mainly by __________. A) ionic bonds B) covalent bonds C) ion-dipole bonds D) ester bonds E) hydrogen bonds
E) hydrogen bonds
93) The formation of krypton from rubidium decay is a result of __________. A) alpha emission B) beta emission C) positron emission D) electron capture E) neutron capture
E) neutron capture
38) Which of the following will display optical isomerism? A) square-planar [Rh(CO)2Cl2]- B) square-planar [Pt(H2NC2H4NH2)2]2+ C) octahedral [Co(NH3)6]3+ D) octahedral [Co(NH3)5Cl]2+ E) octahedral [Co(H2NC2H4NH2)3]3+
E) octahedral [Co(H2NC2H4NH2)3]3+