Question 1

When dissolved in water,KOH behaves as

Accepted Answer

A) an acid that forms K+ and OH- ions. 
B) an acid that forms KO- and H+ ions. 
C) a base that forms K+ and OH- ions. 
D) a base that forms KO- and H+ ions.

Question 2

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

Accepted Answer

A) RaO 
B) C4H10 
C) H I 
D) RbOH

Question 3

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

Accepted Answer

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

Question 4

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

Accepted Answer

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 5

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

Accepted Answer

A) Na2CO3(s)+ 2 HCl(aq)→ 2 NaCl(aq)+ H2O(l)+ CO2(g) 
B) 2Na+(aq)+ CO32-(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) CO32-(aq)+ 2 H+(aq)→ H2O(l)+ CO2(g)

Question 6

What is the reduction half reaction for the following chemical reaction in a basic solution?
Mn2+(aq)+ 2 ClO3-(aq)+ OH-(aq)→ MnO2(s)+ 2 ClO2(aq)+ H2O(l)

Accepted Answer

A) Mn2+(aq)+ 4 OH-(aq)→ MnO2(s)+ 2 H2O(l)+ 2e- 
B) Mn2+(aq)+ 2 H2O(l)→ MnO2(s)+ 4 H+(aq)+ 2e- 
C) ClO3-(aq)+ H2O(l)+ e- → ClO2(aq)+ 2 OH-(aq) 
D) ClO3-(aq)+ 2 H+(aq)+ e- → ClO2(aq)+ H2O(l)

Question 7

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

Accepted Answer

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

Question 8

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

Accepted Answer

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

Question 9

What is the oxidation half reaction in the following chemical reaction?
Zn(s)+ 2 H+(aq)→ Zn2+(aq)+ H2(g)

Accepted Answer

A) Zn(s)→ Zn2+(aq)+ 2e- 
B) Zn2+(aq)+ 2e- → Zn(s) 
C) 2 H+(aq)+ 2e- → H2(g) 
D) H2(g)→ 2 H+(aq)+ 2e-

Question 10

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)

Accepted Answer

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

Question 11

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

Accepted Answer

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 12

Assume that an aqueous solution of hydroxide ion,OHS1U1P1-S1S1P0,represented by unshaded spheres,is allowed to mix with a solution of an acid,HS1U1B1nS1U1B0A,represented by gray spheres.Three possible outcomes are represented by boxes (a)-(c),where the black spheres represent AS1U1P1nS1S1P0S1U1P1-S1S1P0,the anion of the acid.For clarity HS1U1B12S1U1B0O molecules are not shown. 
-Which outcome corresponds to the reaction:
H2SO4 + 2 OH- → 2 H2O + SO42-?

Accepted Answer

A) box (a) 
B) box (b) 
C) box (c) 
D) None of these

Question 13

What is the oxidation number of the oxygen atom in Na2O2 ?

Accepted Answer

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

Question 14

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

Accepted Answer

A) C6H12O6 
B) HOClO2 
C) H2SO4 
D) NH3

Question 15

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

Accepted Answer

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

Question 16

Based on the balanced chemical equation shown below,determine the molarity of a solution containing Fe2+(aq),if 40.00 mL of the Fe2+(aq)solution is required to completely react with 30.00 mL of a 0.125 M potassium bromate,KBrO3(aq),solution.The chemical equation for the reaction is:
6 Fe2+(aq)+ BrO3-(aq)+ 6 H+(aq)→ 6 Fe3+(aq)+ Br-(aq)+ 3 H2O(l).

Accepted Answer

A) 0)0156 M 
B) 0)0938 M 
C) 0)562 M 
D) 1)00 M

Question 17

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

Accepted Answer

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

Question 18

Assume that an aqueous solution of a cation,represented by shaded spheres,is allowed to mix with a solution of an anion,represented by unshaded spheres.Three possible outcomes are represented by boxes (a)-(c). 
-Which outcome corresponds to the combination of silver and chromate ions shown in the following equation?
Ag+(aq)+ CrO42-(aq)→ ?

Accepted Answer

A) box (a) 
B) box (b) 
C) box (c) 
D) None of these

Question 19

The best oxidizing agents are found at the ________ of the activity series.

Accepted Answer

The answer of The best oxidizing agents are found at...

Question 20

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

Accepted Answer

A) Ag. 
B) Ag2CrO4. 
C) AgNO2. 
D) NaNO3.

Exam 4: Reactions in Aqueous Solutions

When dissolved in water,KOH behaves as

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

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

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

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

What is the reduction half reaction for the following chemical reaction in a basic solution? Mn²⁺(aq) + 2 ClO₃^-(aq) + OH^-(aq) → MnO₂(s) + 2 ClO₂(aq) + H₂O(l)

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

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

What is the oxidation half reaction in the following chemical reaction? Zn(s) + 2 H⁺(aq) → Zn²⁺(aq) + H₂(g)

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)

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

What is the oxidation number of the oxygen atom in Na₂O₂?

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

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

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

The best oxidizing agents are found at the ________ of the activity series.

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

Exam 4: Reactions in Aqueous Solutions

When dissolved in water,KOH behaves as

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

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

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

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

What is the reduction half reaction for the following chemical reaction in a basic solution? Mn2+(aq) + 2 ClO3-(aq) + OH-(aq) → MnO2(s) + 2 ClO2(aq) + H2O(l)

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

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

What is the oxidation half reaction in the following chemical reaction? Zn(s) + 2 H+(aq) → Zn2+(aq) + H2(g)

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)

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

What is the oxidation number of the oxygen atom in Na2O2 ?

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

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

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

The best oxidizing agents are found at the ________ of the activity series.

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

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

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

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

What is the reduction half reaction for the following chemical reaction in a basic solution? Mn²⁺(aq) + 2 ClO₃^-(aq) + OH^-(aq) → MnO₂(s) + 2 ClO₂(aq) + H₂O(l)

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

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

What is the oxidation half reaction in the following chemical reaction? Zn(s) + 2 H⁺(aq) → Zn²⁺(aq) + H₂(g)

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)

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

What is the oxidation number of the oxygen atom in Na₂O₂?

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

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

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