Chapter 6

Determine the oxidation number of the underlined element in LiAlH4. a. +1 b. +3 c. 1 d. +2 e. 4

+3

Which of the following reactions is a decomposition reaction? a. 2H2(g) + O2(g) 2H2O (l) b. Fe2O3(s) + 3CO(g) 2Fe(s) + 3CO2(g) c. C3H8(g) + 5O2(g) 3CO2(g) + 4H2O(l) d. 2AgNO3(aq) + Zn(s) 2Ag(s) + Zn(NO3)2(aq) e. 2KClO3(s) 2KCl(s) + 3O2(g)

2KClO3(s) 2KCl(s) + 3O2(g)

Which of the following is the BEST definition of a salt? a. A substance that produces ions in solution b. A substance that is completely ionized in solution. c. A compound composed of metals and nonmetals. d. A compound that contains a cation other than H+ and an anion other than OH or O2 e. A substance that does not produce ions in solution.

A compound that contains a cation other than H+ and an anion other than OH or O2

Which of the following statements best describes an oxidizing agent? a. A substance that is reduced and causes oxidation of another substance. b. A substance that increases the number of oxygen atoms bonded. c. A substance that is oxidized and causes reduction of another substance. d. A substance that reacts with oxygen. e. A substance that contains more than one oxygen atom.

A substance that is reduced and causes oxidation of another substance.

Which of the following is the BEST definition of a salt? a. A substance that produces ions in solution b. A substance that is completely ionized in solution. c. A compound composed of metals and nonmetals. d. A compound that contains a cation other than H+ and an anion other than OH or O2 e. A substance that does not produce ions in solution.

A substance that produces ions in solution

Which element and group are not correctly matched? Element / Periodic Group or Classification a. Sb / metalloid b. Kr / noble gas c. Al / alkali metal d. F / halogen e. Ca / alkaline earth metal

Al / alkali metal

Which of the following matched pairs of name and formula has an error? Formula / Name a. Cl2O7 / dichlorine heptoxide b. As4O6 / tetraarsenic oxide c. NO / nitrogen oxide d. SO3 / sulfur trioxide e. N2O5 / dinitrogen pentoxide

As4O6 / tetraarsenic oxide

Which of the following is a displacement reaction? a. Li2O(s) + CO2(g) Li2CO3(s) b. Cl2(g) + 2NaBr(aq) Br2 (l) + 2NaCl(aq) c. HNO3(aq) + KOH(aq) KNO3(aq) + H2O(l) d. SO3 (l) + H2O (l) H2SO4 (l) e. CaCO3(s) CaO(s) + CO2(g)

Cl2(g) + 2NaBr(aq) Br2 (l) + 2NaCl(aq)

What is the reducing agent in the following reaction? Cu(s) + 4H+(aq) + SO42(aq) Cu2+(aq) + 2H2O (l) + SO2(g) a. Cu b. H+ c. SO42 d. Cu2+ e. SO2

Cu

Which one of the following is not a soluble base? a. KOH b. CsOH c. Fe(OH)2 d. Ca(OH)2 e. Ba(OH)2

Fe(OH)2

Which of the following represents the net ionic reaction for all strong acid / strong base reactions that produce a soluble salt? a. 2H+(aq) + 2e H2(g) b. 2H+(aq) + 2H2O (l) 4OH(aq) c. H+(aq) + OH(aq) H2O(l) d. H2O (l) + OH(aq) O2(g) + 3/2H2(g) e. 2H+(aq) + O2(aq) 2H2O(l)

H+(aq) + OH(aq) H2O(l)

Which of the following is an ionization? a. HCl(aq) + NaOH(aq) NaCl(aq) + H2O(l) b. AgNO3(aq) + LiCl(aq) AgCl(s) + LiNO3(aq) c. HBr(g) H+(aq) + Br(aq) d. 2 H2O (l) 2 H2(g) + O2(g) e. P4(s) + 6 Cl2(g) 4 PCl3 (l)

HBr(g) H+(aq) + Br(aq)

What is the total ionic equation for the following formula unit equation? HF(aq) + KOH(aq) KF(aq) + H2O (l) a. [H+(aq) + F(aq)] + [K+(aq) + OH(aq)] [K+(aq) + F(aq)] + [2H+ (l) + O2 (l) ] b. [H+(aq) + F(aq)] + [K+(aq) + OH(aq)] [K+(aq) + F(aq)] + H2O(aq) c. HF(aq) + [K+(aq) + OH(aq)] [K+(aq) + F(aq)] + H2O(l) d. HF(aq) + [K+(aq) + OH(aq)] [K+(aq) + F(aq)] + [2H+(aq) + OH(aq)] e. HF(aq) + OH(aq) F(aq) + H2O(l)

HF(aq) + [K+(aq) + OH(aq)] [K+(aq) + F(aq)] + H2O(l)

Which one of the following acids does not produce H2(g) as a major product of reaction with a moderately active metal like zinc? a. H2SO4 b. HCl c. HClO4 d. HClO3 e. HNO3

HNO3

Classify the following reaction by giving all of these reaction type(s) that apply. 2KClO3(aq) 2KCl(aq) + 3O2(g) I. redox II. combination III. decomposition IV. displacement V. metathesis a. I and III b. only II c. I and II d. only IV e. only V

I and III

Which of the following is the most active metal? a. Na b. K c. Mg d. Zn e. Al

K

Which of the following cations is almost always a spectator cation? a. NH4+ b. Ag+ c. Al3+ d. Sn2+ e. Ba2+

NH4+

Which of the following anions is almost always a spectator ion? a. O2 b. OH c. NO3 d. S2 e. CO32

NO3

Which of the following reactions is a combination reaction? a. AgNO3(aq) + HCl(aq) AgCl(s) + HNO3(aq) b. Na2O(s) + CO2(g) Na2CO3(s) c. C3H8(g) + 5O2(g) 3CO2(g) + 4H2O (l) d. 2H2O (l) 2H2(g) + O2(g) e. KOH(aq) + HCl(aq) KCl(aq) + H2O (l)

Na2O(s) + CO2(g) Na2CO3(s)

Which one of the following metals is least active? a. Ca b. K c. Pt d. Li e. Al

Pt

Which one of the following is not a strong electrolyte? a. PbSO4 b. (NH4)2S c. Na2O d. HBr e. Sr(OH)2

Sr(OH)2

The oxidation number of an atom is a. the number of oxygen atoms bonded. b. the number of protons in the nucleus. c. the sum of all the charges. d. the number of electrons in the atom. e. a number assigned to atoms to keep track of electron transfers.

a number assigned to atoms to keep track of electron transfers.

What is the correct name for NH4ClO3? a. nitrogen chlorate b. tetraammonium trichloride c. ammonium chloride d. tetraammonium chlorite e. ammonium chlorate

ammonium chlorate

Which of the following is a characteristic that describes nonmetals? a. shiny b. ductile c. good conductor d. their solids shatter when hammered e. form cations

their solids shatter when hammered