Deck 4: Reactions in Aqueous Solutions

Question 1

The reaction Cu(s)+ 2 AgNO₃(aq)→ Cu(NO₃)₂(aq)+ 2 Ag(s)is best classified as a(n)

A)acid-base neutralization reaction.
B)double replacement reaction.
C)oxidation-reduction reaction.
D)precipitation reaction.

Answer 1

oxidation-reduction reaction.

Question 2

HBr,HCl,HClO₄,KBr,and NaCl are all classified as

A)acids.
B)nonelectrolytes.
C)strong electrolytes.
D)weak electrolytes.

Answer 2

strong electrolytes.

Question 3

Acetic acid (CH₃CO₂H),formic acid (HCO₂H),hydrofluoric acid (HF),ammonia (NH₃),and methylamine (CH₃NH₂)are commonly classified as

A)acids.
B)nonelectrolytes.
C)strong electrolytes.
D)weak electrolytes.

Answer 3

weak electrolytes.

Question 4

The reaction C₆H₁₂O₆(s)+ 6 O₂(g)→ 6 CO₂(g)+ 6 H₂O(l)is best classified as a(n)

A)acid-base neutralization reaction.
B)double replacement reaction.
C)oxidation-reduction reaction.
D)precipitation reaction.

Question 5

The reaction Pb(NO₃)₂(aq)+ K₂SO₄(aq)→ PbSO₄(s)+ 2 KNO₃(aq)is best classified as a(n)

A)acid-base neutralization reaction.
B)oxidation-reduction reaction.
C)precipitation reaction.
D)single replacement reaction.

Question 6

The reaction Na₃PO₄(aq)+ 3 AgNO₃(aq)→ Ag₃PO₄(s)+ 3 NaNO₃(aq)is best classified as a(n)

A)acid-base neutralization reaction.
B)oxidation-reduction reaction.
C)precipitation reaction.
D)single replacement reaction.

Question 7

The reaction 2 HNO₃(aq)+ Ba(OH)₂(aq)→ Ba(NO₃)₂(aq)+ 2 H₂O(l)is best classified as a(n)

A)acid-base neutralization reaction.
B)oxidation-reduction reaction.
C)precipitation reaction.
D)single replacement reaction.

Question 8

Write a balanced net ionic equation for the reaction of Na₂CO₃(s)and HCl(aq).

A)Na₂CO₃(s)+ 2 HCl(aq)→ 2 NaCl(aq)+ H₂O(l)+ CO₂(g)
B)2Na⁺(aq)+ CO₃^2-(aq)+ 2H⁺(aq)+ 2Cl^-(aq)→ 2Na⁺(aq)+ 2Cl^-(aq)+ H₂O(l)+ CO₂(g)
C)Na₂CO₃(s)+ 2 H⁺(aq)→ 2 Na⁺(aq)+ H₂O(l)+ CO₂(g)
D)CO₃^2-(aq)+ 2 H⁺(aq)→ H₂O(l)+ CO₂(g)

Question 9

Write a balanced net ionic equation for the reaction of NiBr₂(aq)with (NH₄)₂S(aq).

A)NiBr₂(aq)+ (NH₄)₂S(aq)→ NiS(s)+ 2 NH₄Br(aq)
B)Ni²⁺(aq)+ 2 Br^-(aq)+ 2 NH₄⁺(aq)+ S^2-(aq)→ NiS(s)+ 2 NH₄⁺(aq)+ 2 Br^-(aq)
C)Ni²⁺(aq)+ 2 Br^-(aq)+ 2 NH₄⁺(aq)+ S^2-(aq)→ NiS(s)+ 2 NH₄Br(s)
D)Ni²⁺(aq)+ S^2-(aq)→ NiS(s)

Question 10

Write a balanced net ionic equation for the reaction of AgNO₃(aq)with KBr(aq).

A)AgNO₃(aq)+ KBr(aq)→ AgBr(aq)+ KNO₃(s)
B)Ag⁺(aq)+ NO₃^-(aq)+ K⁺(aq)+ Br^-(aq)→ Ag⁺(aq)+ Br^-(aq)+ KNO₃(s)
C)Ag⁺(aq)+ NO₃^-(aq)+ K⁺(aq)+ Br^-(aq)→ AgBr(s)+ K⁺(aq)+ NO₃^-(aq)
D)Ag⁺(aq)+ Br^-(aq)→ AgBr(s)

Question 11

In a solution prepared by mixing CH₃OH with H₂O the major species present are

A)CH₃OH and H₂O
B)CH₃OH,H⁺,and OH^-
C)CH₃⁺,OH^-,and H₂O
D)CH₃O^-,H⁺,and H₂O

Question 12

Write a balanced net ionic equation for the reaction of Pb(NO₃)₂(aq)with NaI(aq).

A)Pb(NO₃)₂(aq)+ 2 NaI(aq)→ PbI₂(s)+ 2 NaNO₃(aq)
B)Pb²⁺(aq)+ 2 NO₃^-(aq)+ 2 Na⁺(aq)+ 2 I^-(aq)→ Pb²⁺(aq)+ 2 I^-(aq)+ 2 Na⁺(aq)+ 2 NO₃^-(aq)
C)Pb²⁺(aq)+ 2 NO₃^-(aq)+ 2 Na⁺(aq)+ 2 I^-(aq)→ PbI₂(s)+ 2 Na⁺(aq)+ 2 NO₃^-(aq)
D)Pb²⁺(aq)+ 2 I^-(aq)→ PbI₂(s)

Question 13

The combustion reaction CH₄(g)+ 2 O₂(g)→ CO₂(g)+ 2 H₂O(l)can be classified as a(n)

A)acid-base neutralization reaction.
B)double replacement reaction.
C)oxidation-reduction reaction.
D)precipitation reaction.

Question 14

What is the molar concentration of sodium ions in a 0.350 M Na₃PO₄ solution?

A)0)117 M
B)0)350 M
C)1)05 M
D)1)40 M

Question 15

Write a balanced net ionic equation for the reaction of H₂SO₄(aq)with Ba(OH)₂(aq).

A)H₂SO₄(aq)+ Ba(OH)₂(aq)→ BaSO₄(s)+ 2 H₂O(l)
B)2 H⁺(aq)+ SO₄^2-(aq)+ Ba²⁺(aq)+ 2 OH^-(aq)→ BaSO₄(s)+ 2 H₂O(l)
C)H⁺(aq)+ OH⁺(aq)→ H₂O(l)
D)Ba²⁺(aq)+ SO₄^2-(aq)→ BaSO₄(s)

Question 16

Write a balanced net ionic equation for the reaction of CdCl₂(aq)with Na₂S(aq).

A)CdCl₂(aq)+ Na₂S(aq)→ CdS (aq)+ 2 NaCl(aq)
B)Cd²⁺(aq)+ 2 Cl^-(aq)+ 2 Na⁺(aq)+ S^2-(aq)→ CdS(s)+ 2 NaCl(aq)
C)Cd²⁺(aq)+ S^2-(aq)→ CdS(s)
D)Cd²⁺(aq)+ 2 Cl^-(aq)+ 2 Na⁺(aq)+ S^2-(aq)→ CdS(s)+ 2 Na⁺(aq)

Question 17

Write a balanced net ionic equation for the reaction of AgNO₃(aq)with Cu(s).

A)AgNO₃(aq)+ Cu(s)→ Ag(s)+ CuNO₃(aq)
B)Ag⁺(aq)+ Cu(s)→ Ag(s)+ Cu⁺(aq)
C)2 AgNO₃(aq)+ Cu(s)→ 2 Ag(s)+ CuNO₃(aq)
D)2Ag⁺(aq)+ Cu(s)→ 2 Ag(s)+ Cu²⁺(aq)

Question 18

What is the molar concentration of sulfate ions in a 0.150 M Na₂SO₄ solution?

A)0)075 M
B)0)150 M
C)0)300 M
D)0)450 M

Question 19

Water (H₂O),methyl alcohol (CH₃OH),ethyl alcohol (CH₃CH₂OH),ethylene glycol (HOCH₂CH₂OH),and sucrose (C₁₂H₂₂O₁₁)are commonly classified as

A)bases.
B)nonelectrolytes.
C)strong electrolytes.
D)weak electrolytes.

Question 20

The reaction HNO₃(aq)+ KOH(aq)→ KNO₃(aq)+ H₂O(l)is best classified as a(n)

A)acid-base neutralization reaction.
B)oxidation-reduction reaction.
C)precipitation reaction.
D)single replacement reaction.

Question 21

In the reaction AgNO₃(aq)+ HI(aq)→ AgI(s)+ HNO₃(aq)the spectator ions are

A)Ag⁺ and NO₃^-
B)Ag⁺ and I^-
C)H⁺ and I^-
D)H⁺ and NO₃^-

Question 22

Predict the products of a reaction between AgNO₃(aq)and KBr(aq).

A)Ag(s)and NO(g)
B)Ag(s)and Br₂(l)
C)AgBr(s)and KNO₃(aq)
D)AgNO₃(aq)and KBr(aq)

Question 23

The mixing of which pair of reactants will result in a precipitation reaction?

A)Cu(NO₃)₂(aq)+ Na₂CO₃(aq)
B)K₂SO₄(aq)+ Cu(NO₃)₂(aq)
C)NaClO₄(aq)+ (NH₄)₂S(aq)
D)NH₄Br(aq)+ NaI(aq)

Question 24

What reagent could not be used to separate Cl^- from OH^- when added to an aqueous solution containing both?

A)AgNO₃(aq)
B)Ca(NO₃)₂(aq)
C)Cu(NO₃)₂(aq)
D)Fe(NO₃)₃(aq)

Question 25

What ion is provided when Arrhenius bases dissolve in water?

A)H⁺
B)Na⁺
C)Cl^-
D)OH^-

Question 26

Predict the products of a reaction between Ba(NO₃)₂(aq)and K₂SO₄(aq).

A)Ba(s),KNO₃(aq)and K₂SO₃(aq)
B)BaSO₃(s)and KNO₂(aq)
C)BaSO₃(s)and KNO₃(aq)
D)BaSO₄(s)and KNO₃(aq)

Question 27

What reagent could be used to separate Br^- from NO₃^- when added to an aqueous solution containing both?

A)AgNO₃(aq)
B)Ba(OH)₂(aq)
C)CuSO₄(aq)
D)NaI(aq)

Question 28

Which pair of reactants will produce a precipitate when mixed together?

A)HCl(aq)and NaOH(aq)
B)HCl(aq)and Na₂CO₃(aq)
C)HCl(aq)and Na₂S(aq)
D)HCl(aq)and Pb(NO₃)₂(aq)

Question 29

Which one of the following compounds is insoluble in water?

A)K₂SO₄
B)NaNO₃
C)PbSO₄
D)Rb₂CO₃

Question 30

What reagent would distinguish between Ag⁺ and Fe³⁺?

A)NaClO₃
B)NaI
C)NaNO₃
D)NaOH

Question 31

Phthalic acid is a diprotic acid having the formula HO₂CC₆H₄CO₂H that can be converted to a salt by reaction with base.Which of the following is expected to be most soluble in water?

A)HO₂CC₆H₄CO₂H
B)HO₂CC₆H₄CO₂Na
C)HO₂CC₆H₄CO₂K
D)NaO₂CC₆H₄CO₂K

Question 32

When Na₂CrO₄(aq)and AgNO₃(aq)are mixed,a red colored precipitate forms which is

A)Ag.
B)Ag₂CrO₄.
C)AgNO₂.
D)NaNO₃.

Question 33

Which one of the following compounds is soluble in water?

A)Ag₃PO₄
B)CuS
C)Pb(NO₃)₂
D)ZnCO₃

Question 34

When K₂SO₄(aq)and Pb(NO₃)₂(aq)are mixed,a white colored precipitate forms which is

A)KNO_3.
B)K₂SO_3.
C)Pb.
D)PbSO_4.

Question 35

Which pair of compounds is insoluble in water?

A)AgNO₃ and KNO₃
B)Na₂S and CuS
C)(NH₄)₂SO₄ and AgI
D)PbSO₄ and Pb₃(PO₄)₂

Question 36

Which of the following compounds is not an Arrhenius acid?

A)CH₃CO₂H
B)CH₃NH₂
C)HNO₃
D)H₂SO₄

Question 37

What reagent would distinguish between Ba²⁺ and Pb²⁺?

A)NaCl
B)NaNO₃
C)Na₂SO₄
D)Na₂S₂O₃

Question 38

The mixing of which pair of reactants will result in a precipitation reaction?

A)CsI(aq)+ NaOH(aq)
B)HCl(aq)+ Ca(OH)₂(aq)
C)K₂SO₄(aq)+ Ba(NO₃)₂(aq)
D)NaNO₃(aq)+ NH₄Cl(aq)

Question 39

Which pair of compounds is soluble in water?

A)AgBr and AgI
B)CdS and (NH₄)₂S
C)KI and Ba(NO₃)₂
D)NaNO₃ and CuCO₃

Question 40

When dissolved in water,LiOH behaves as

A)an acid that forms Li⁺ and OH^- ions.
B)an acid that forms LiO^- and H⁺ ions.
C)a base that forms Li⁺ and OH^- ions.
D)a base that forms LiO^- and H⁺ ions.

Question 41

Write a net ionic equation for the neutralization reaction of CH₃CO₂H(aq)with CsOH(aq).

A)CH₃CO₂H(aq)+ CsOH(aq)→ CH₃CO₂Cs(aq)+ H₂O(l)
B)CH₃CO₂^-(aq)+ H⁺(aq)+ Cs⁺(aq)+ OH^-(aq)→ CH₃CO₂^-(aq)+ Cs⁺ + H₂O(l)
C)CH₃CO₂H(aq)+ Cs⁺(aq)+ OH^-(aq)→ CH₃CO₂Cs(s)+ H₂O(l)
D)CH₃CO₂H(aq)+ OH^-(aq)→ CH₃CO₂^-(aq)+ H₂O(l)

Question 42

Write a net ionic equation for the neutralization reaction of HCN(aq)with NaOH(aq).

A)HCN(aq)+ NaOH(aq)→ NaCN(aq)+ H₂O(l)
B)HCN(aq)+ Na⁺(aq)+ OH^-(aq)→ Na⁺(aq)+ CN^-(aq)+ H₂O(l)
C)HCN(aq)+ OH^-(aq)→ CN^-(aq)+ H₂O(l)
D)H⁺(aq)+ OH^-(aq)→ H₂O(l)

Question 43

How many H⁺ ions can the acid CH₃CO₂H donate per molecule?

A)1
B)2
C)3
D)4

Question 44

By analogy with the oxoacids of sulfur,H₂TeO₃ would be named

A)hydrotellurous acid.
B)pertelluric acid.
C)telluric acid.
D)tellurous acid.

Question 45

When dissolved in water,of HClO₄,Ca(OH)₂,KOH,HI,which are bases?

A)Ca(OH)₂ and KOH
B)HClO₄ and HI
C)only HI
D)only KOH

Question 46

What is the oxidation number of the oxygen atom in H₂O₂?

A)-2
B)-1
C)+1
D)+2

Question 47

The chemical formula for sulfurous acid is

A)H₂S(aq).
B)H₂SO₃(aq).
C)H₂SO₄(aq).
D)H₂S₂O₇(aq).

Question 48

Which of the following is not a strong acid?

A)HF
B)HCl
C)HBr
D)HI

Question 49

What is the oxidation number of the sulfur atom in S₈?

A)-2
B)0
C)+6
D)+8

Question 50

What is the oxidation number of the chromium atom in K₂Cr₂O₇?

A)-2
B)+2
C)+6
D)+7

Question 51

How many H⁺ ions can the acid,H₂CO₃,donate per molecule?

A)0
B)1
C)2
D)3

Question 52

What is the oxidation number of the sulfur atom in H₂SO₄?

A)-2
B)+2
C)+4
D)+6

Question 53

An aqueous solution of HI is named

A)hydriodic acid.
B)hydroiodous acid.
C)iodic acid.
D)iodous acid.

Question 54

When dissolved in water,of HClO_4, Ca(OH)₂,KOH,HI,which are acids?

A)Ca(OH)₂ and KOH
B)HClO₄ and HI
C)only HI
D)only KOH

Question 55

Which one of the following compounds behaves as an acid when dissolved in water?

A)BaO
B)CH₄
C)HBr
D)KOH

Question 56

In which compound is the oxidation state of oxygen not -2?

A)MgO
B)Li₂O
C)Na₂O₂
D)Al₂O₃

Question 57

Which of the following compounds is an Arrhenius base in water?

A)C₆H₁₂O₆
B)HOClO₂
C)H₂SO₄
D)NH₃

Question 58

Which of the following compounds is an Arrhenius base in water?

A)CH₃OH
B)CH₃CO₂H
C)HOCl
D)KOH

Question 59

Write a net ionic equation for the neutralization reaction of H₃PO₄(aq)with Ba(OH)₂(aq).

A)2 H₃PO₄(aq)+ 3 Ba(OH)₂(aq)→ Ba₃(PO₄)₂(s)+ 6 H₂O(l)
B)2 H₃PO₄(aq)+ 3 Ba²⁺(aq)+ 6 OH^-(aq)→ Ba₃(PO₄)₂(s)+ 6 H₂O(l)
C)6 H⁺(aq)+ 2 PO₄^3-(aq)+ 3 Ba²⁺(aq)+ 6 OH^-(aq)→ Ba₃(PO₄)₂(s)+ 6 H₂O(l)
D)H⁺(aq)+ OH^-(aq)→ H₂O(l)

Question 60

How many H⁺ ions can the acid H₃PO₄ donate per molecule?

A)0
B)1
C)2
D)3

Question 61

Using the following portion of the activity series for oxidation half reactions
Mg(s)→ Mg²⁺(aq)+ 2e^-
Zn(s)→ Zn²⁺(aq)+ 2e^-
Cu(s)→ Cu²⁺(aq)+ 2e^-
indicate which pairs of reactions will occur.

A)Cu(s)with Zn²⁺(aq)and Zn(s)with Mg²⁺(aq)
B)Mg(s)with Cu²⁺(aq)and Zn²⁺(aq)with Mg²⁺(aq)
C)Mg(s)with Cu(s)and Zn(s)with Cu(s)
D)Mg(s)with Zn²⁺(aq)and Zn(s)with Cu²⁺(aq)

Question 62

Using the following portion of the activity series for oxidation half reactions
K(s)→ K⁺(aq)+ e^-
Al(s)→ Al³⁺(aq)+ 3e^-
Fe(s)→ Fe²⁺(aq)+ 2e^-
Sn(s)→ Sn²⁺(aq)+ 2e^-
Determine which reaction will occur.

A)Al³⁺(aq)with Fe(s)
B)Al(s)with Sn(s)
C)K⁺(aq)with Fe²⁺(aq)
D)K(s)with Sn²⁺(aq)

Question 63

Using the following sequence of reactions,determine the order of oxidizing agents (strongest to weakest).
Q + U⁺ → Q⁺ + U
U + W⁺ → U⁺ + W
Q + W⁺ → Q⁺ + W

A)Q > U > W
B)W > U > Q
C)Q⁺ > U⁺ > W⁺
D)W⁺ > U⁺ > Q⁺

Question 64

Which elements will react rapidly with aqueous H⁺ ions and also with liquid H₂O?

A)Al,Cr,Fe,Mn,Zn
B)Au,Co,Cu,Ni,Sn
C)Au,Li,K,Ni,Sn
D)Ba,Ca,Li,K,Na

Question 65

Which species functions as the reducing agent in the following reduction-oxidation reaction?
2 P(s)+ 3 Br₂(l)→ 2 PBr₃(l)

A)Br^-(aq)
B)Br₂(l)
C)P(s)
D)P³⁺(aq)

Question 66

Which species functions as the oxidizing agent in the following reduction-oxidation reaction?
5 Fe²⁺(aq)+ MnO₄^-(aq)+ 8 H⁺(aq)→ Mn²⁺(aq)+ 5 Fe³⁺(aq)+ 4 H₂O(l)

A)Fe²⁺(aq)
B)H⁺(aq)
C)Mn²⁺(aq)
D)MnO₄^-(aq)

Question 67

Using the following portion of the activity series for oxidation half-reactions,determine which combination of reactants will result in a reaction.
Na(s)→ Na⁺(aq)+ e^-
Cr(s)→ Cr³⁺(aq)+ 3e^-

A)Na(s)with Cr(s)
B)Na(s)with Cr³⁺(aq)
C)Na⁺(aq)with Cr³⁺(aq)
D)Na⁺(aq)with Cr(s)

Question 68

Coinage metals are metals that are not easily oxidized.Based on the activity series,which metal would be least desirable as a coinage metal?

A)Al
B)Au
C)Mg
D)Mn

Question 69

In the reaction 2 H₂O₂(l)→ 2 H₂O(l)+ O₂(g)oxygen is

A)both oxidized and reduced.
B)neither oxidized nor reduced.
C)only oxidized.
D)only reduced.

Question 70

Using the following portion of the activity series for oxidation half reactions
K(s)→ K⁺(aq)+ e^-
Al(s)→ Al³⁺(aq)+ 3e^-
Fe(s)→ Fe²⁺(aq)+ 2e^-
Sn(s)→ Sn²⁺(aq)+ 2e^-
Determine which pairs of reactions will occur.

A)Al(s)with Fe²⁺(aq)and Sn(s)with K⁺(aq)
B)Fe(s)with Al(s)and Al³⁺(aq)with Sn²⁺(aq)
C)Fe(s)with Sn²⁺(aq)and Al(s)with Sn²⁺(aq)
D)K(s)with Al³⁺(aq)and Fe(s)with Al³⁺(aq)

Question 71

What is the oxidation number change for the iron atom in the following reaction?
2 Fe₂O₃(s)+ 3 C(s)→ 4 Fe(s)+ 3 CO₂(g)

A)-6
B)-3
C)+3
D)+6

Question 72

Which species functions as the oxidizing agent in the following reduction-oxidation reaction?
Zn(s)+ Cu²⁺(aq)→ Cu(s)+ Zn²⁺(aq)

A)Cu(s)
B)Cu²⁺(aq)
C)Zn(s)
D)Zn²⁺(aq)

Question 73

Which elements will not react with liquid water but will react with aqueous H⁺ ions?

A)Ag,Cu,Hg,Pt
B)Al,Cr,Mn,Zn
C)Ba,Ca,Li,Na
D)Ag,Au,Ca,K

Question 74

In which compound is the oxidation state of hydrogen not +1?

A)H₂O
B)H₂O₂
C)NaH
D)Na₂HSO₄

Question 75

What is the oxidation number change for the manganese atom in the following unbalanced reduction half reaction?
MnO₄^-(aq)+ H⁺(aq)→ Mn²⁺(aq)+ H₂O(l)

A)-7
B)-5
C)+5
D)+7

Question 76

Which species functions as the reducing agent in the following reduction-oxidation reaction?
ZnO(s)+ C(s)→ Zn(s)+ CO(g)

A)C(s)
B)CO(g)
C)Zn(s)
D)ZnO(s)

Question 77

Disproportionation is a reaction in which a substance is both oxidized and reduced in the reaction.Which is a disproportionation reaction?

A)ClO₃^-(aq)+ 3 Cu(s)+ 6 H⁺(aq)→ Cl^-(aq)+ 3 Cu²⁺(aq)+ 3 H₂O(l)
B)ClO^-(aq)+ Pb(OH)₄^-(aq)→ Cl^-(aq)+ PbO₂(s)+ H₂O(l)+ 2 OH^-(aq)
C)6 Cl^-(aq)+ Cr₂O₇^2-(aq)+ 14 H⁺(aq)→ 3 Cl₂(g)+ 2 Cr³⁺(aq)+ 7 H₂O(l)
D)Cl₂(g)+ 2 OH^-(aq)→ Cl^-(aq)+ ClO^-(aq)+ H₂O(l)

Question 78

Based on the activity series,which metal dissolves in hydrochloric acid to produce hydrogen gas?

A)Ag
B)Au
C)Co
D)Cu

Question 79

Using the following portion of the activity series for oxidation half reactions
Ca(s)→ Ca²⁺(aq)+ 2e^-
Mg(s)→ Mg²⁺(aq)+ 2e^-
Zn(s)→ Zn²⁺(aq)+ 2e^-
Cu(s)→ Cu²⁺(aq)+ 2e^-
Determine which reaction will not occur.

A)Ca(s)with Cu²⁺(aq)
B)Ca(s)with Zn²⁺(aq)
C)Zn(s)with Cu²⁺(aq)
D)Zn(s)with Mg²⁺(aq)

Question 80

Using the following sequence of reactions,determine the order of reducing agents (strongest to weakest).
A + B⁺ → A⁺ + B
A + C⁺ → A⁺ + C
B + C⁺ → no reaction

A)A > B > C
B)A > C > B
C)B > C > A
D)C⁺ > B⁺ > A⁺