Question 1

A 250.mL sample of 0.0328M HCl is partially neutralized by the addition of 100.mL of 0.0245M NaOH.Find the concentration of hydrochloric acid in the resulting solution.

Accepted Answer

A) 0.00700 M 
B) 0.0164 M 
C) 0.0383 M 
D) 0.0230 M 
E) 0.0575 M

Question 2

Identify the correct net ionic equation for the reaction that occurs when solutions of HNO3 and KOH are mixed?

Accepted Answer

A) HNO3(aq)+ KOH(aq)$\rarr$ H2O(l)+ KNO3(aq) 
B) K+(aq)+ NO3-(aq)$\rarr$ KNO3(aq) 
C) HNO3(aq)+ KOH(aq)$\rarr$H2O(l)+ KNO3(s) 
D) H+(aq)+ OH-(aq)$\rarr$ H2O(l) 
E) HNO3(aq)+ OH-(aq)$\rarr$H2O(l)+ NO3-(aq)

Question 3

Identify the reducing agent in the following chemical reaction.
 Cd + NiO2 + 2H2O $\rarr$Cd(OH)2 + Ni(OH)2

Accepted Answer

A) Cd 
B) NiO2 
C) H2O 
D) Cd(OH)2 
E) Ni(OH)2

Question 4

Which of the following will occur when solutions of ZnSO4(aq)and MgCl2(aq)are mixed?

Accepted Answer

A) A precipitate of ZnCl2 will form; Mg2+ and SO42- will be spectator ions. 
B) A precipitate of ZnSO4 will form ; Mg2+ and Cl- will be spectator ions. 
C) A precipitate of MgSO4 will form ; Zn2+ and Cl- will be spectator ions. 
D) A precipitate of MgCl2 will form ; Zn2+ and SO42- will be spectator ions. 
E) No precipitate will form.

Question 5

Identify the element being oxidized in the following reaction. 2KBr + F₂ $\rarr$Br₂ + 2KF

Accepted Answer

The answer of Identify the element being oxidized in the...

Question 6

Predict the products of the following single replacement reaction.
 Ni(s)+ Cu(NO3)2(aq)$\rarr$

Accepted Answer

A) No reaction occurs 
B) NiNO3(aq)+ CuNO3(aq) 
C) NiCu(aq)2 NO3-(aq) 
D) Ni(NO3)2(aq)+ Cu(s) 
E) Ni(NO3)2(aq)+ Cu2+(aq)

Question 7

Which of the following ions is a weak acid?

Accepted Answer

A) SO42- 
B) H2SO4 
C) HSO4- 
D) HNO3 
E) NO3-

Question 8

Identify the element being oxidized in the following reaction. 4Al + 3O₂$\rarr$2Al₂O₃

Accepted Answer

The answer of Identify the element being oxidized in the...

Question 9

Based on the solubility rules, which of the following compounds should be insoluble in water?

Accepted Answer

A) CaCO3 
B) (NH4)2CO3 
C) Na2CO3 
D) K2CO3 
E) KNO3

Question 10

For the chlorate ion, ClO3- , what are the oxidation states of the Cl and O, respectively?

Accepted Answer

A) - 1, - 2 
B) +5, - 2 
C) +6, - 2 
D) +7, - 2 
E) +2, - 1

Question 11

Sugar dissolves in water, therefore it is a strong electrolyte.

Accepted Answer

A) True 
 B)False

Question 12

Thorium metal is prepared by reacting thorium oxide with calcium as shown below. ThO₂ + 2Ca $\rarr$ Th + 2CaO Which substance is oxidized in this process?

Accepted Answer

The answer of Thorium metal is prepared by reacting thorium...

Question 13

Write the balanced molecular and net ionic equations for the reaction that would occur between CaCl₂(aq)and Na₂CO₃(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Accepted Answer

The answer of Write the balanced molecular and net ionic...

Question 14

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O Which substance is reduced in this process?

Accepted Answer

The answer of Batteries in our cars generate electricity by...

Question 15

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.mL.What is the concentration of nitric acid in the final solution?

Accepted Answer

A) 1.27 M 
B) 8.12 × 10-3 M 
C) 0.406 M 
D) 3.25 × 10-2 M 
E) 5.08 × 10-4 M

Question 16

Which of the following compounds is a weak electrolyte?

Accepted Answer

A) HNO3 
B) NaNO3 
C) HNO2 
D) NaNO2 
E) NaOH

Question 17

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O What is the oxidizing agent in this process?

Accepted Answer

The answer of Batteries in our cars generate electricity by...

Question 18

Most compounds containing chlorides, bromides, and iodides are soluble except those containing Ag+, Hg22+, and Pb2+.

Accepted Answer

A) True 
 B)False

Question 19

Identify the precipitate(s)formed when solutions of Hg₂(ClO₄)₂(aq), (NH₄)₂SO₄(aq), and Rb₂SO₄(aq)are mixed.

Accepted Answer

The answer of Identify the precipitate(s)formed when solutions of Hg₂(ClO₄)₂(aq),...

Question 20

A 3.682 g sample of KClO3 is dissolved in enough water to give 375.mL of solution.What is the chlorate ion concentration in this solution?

Accepted Answer

A) 3.00 × 10-2 M 
B) 4.41 × 10-2 M 
C) 0.118 M 
D) 1.65 × 10-2 M 
E) 8.01 × 10-2 M

Exam 4: Reactions in Aqueous Solutions

A 250.mL sample of 0.0328M HCl is partially neutralized by the addition of 100.mL of 0.0245M NaOH.Find the concentration of hydrochloric acid in the resulting solution.

Identify the correct net ionic equation for the reaction that occurs when solutions of HNO₃ and KOH are mixed?

Identify the reducing agent in the following chemical reaction. Cd + NiO₂ + 2H₂O $\rarr$ Cd(OH) ₂ + Ni(OH) ₂

Which of the following will occur when solutions of ZnSO₄(aq) and MgCl₂(aq) are mixed?

Identify the element being oxidized in the following reaction. 2KBr + F₂ $\rarr$ Br₂ + 2KF

Predict the products of the following single replacement reaction. Ni(s) + Cu(NO₃) ₂(aq) $\rarr$

Which of the following ions is a weak acid?

Identify the element being oxidized in the following reaction. 4Al + 3O₂ $\rarr$ 2Al₂O₃

Based on the solubility rules, which of the following compounds should be insoluble in water?

For the chlorate ion, ClO₃^- , what are the oxidation states of the Cl and O, respectively?

Sugar dissolves in water, therefore it is a strong electrolyte.

Thorium metal is prepared by reacting thorium oxide with calcium as shown below. ThO₂ + 2Ca $\rarr$ Th + 2CaO Which substance is oxidized in this process?

Write the balanced molecular and net ionic equations for the reaction that would occur between CaCl₂(aq)and Na₂CO₃(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O Which substance is reduced in this process?

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.mL.What is the concentration of nitric acid in the final solution?

Which of the following compounds is a weak electrolyte?

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O What is the oxidizing agent in this process?

Most compounds containing chlorides, bromides, and iodides are soluble except those containing Ag⁺, Hg₂²⁺, and Pb²⁺.

Identify the precipitate(s)formed when solutions of Hg₂(ClO₄)₂(aq), (NH₄)₂SO₄(aq), and Rb₂SO₄(aq)are mixed.

A 3.682 g sample of KClO₃ is dissolved in enough water to give 375.mL of solution.What is the chlorate ion concentration in this solution?

Exam 4: Reactions in Aqueous Solutions

A 250.mL sample of 0.0328M HCl is partially neutralized by the addition of 100.mL of 0.0245M NaOH.Find the concentration of hydrochloric acid in the resulting solution.

Identify the correct net ionic equation for the reaction that occurs when solutions of HNO3 and KOH are mixed?

Identify the reducing agent in the following chemical reaction. Cd + NiO2 + 2H2O →\rarr→ Cd(OH) 2 + Ni(OH) 2

Which of the following will occur when solutions of ZnSO4(aq) and MgCl2(aq) are mixed?

Identify the element being oxidized in the following reaction. 2KBr + F2 →\rarr→ Br2 + 2KF

Predict the products of the following single replacement reaction. Ni(s) + Cu(NO3) 2(aq) →\rarr→

Which of the following ions is a weak acid?

Identify the element being oxidized in the following reaction. 4Al + 3O2 →\rarr→ 2Al2O3

Based on the solubility rules, which of the following compounds should be insoluble in water?

For the chlorate ion, ClO3- , what are the oxidation states of the Cl and O, respectively?

Sugar dissolves in water, therefore it is a strong electrolyte.

Thorium metal is prepared by reacting thorium oxide with calcium as shown below. ThO2 + 2Ca →\rarr→ Th + 2CaO Which substance is oxidized in this process?

Write the balanced molecular and net ionic equations for the reaction that would occur between CaCl2(aq)and Na2CO3(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO2 + 2H2SO4 →\rarr→ 2PbSO4 + 2H2O Which substance is reduced in this process?

A 20.00 mL sample of 0.1015 M nitric acid is introduced into a flask, and water is added until the volume of the solution reaches 250.mL.What is the concentration of nitric acid in the final solution?

Which of the following compounds is a weak electrolyte?

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO2 + 2H2SO4 →\rarr→ 2PbSO4 + 2H2O What is the oxidizing agent in this process?

Most compounds containing chlorides, bromides, and iodides are soluble except those containing Ag+, Hg22+, and Pb2+.

Identify the precipitate(s)formed when solutions of Hg2(ClO4)2(aq), (NH4)2SO4(aq), and Rb2SO4(aq)are mixed.

A 3.682 g sample of KClO3 is dissolved in enough water to give 375.mL of solution.What is the chlorate ion concentration in this solution?

Identify the correct net ionic equation for the reaction that occurs when solutions of HNO₃ and KOH are mixed?

Identify the reducing agent in the following chemical reaction. Cd + NiO₂ + 2H₂O $\rarr$ Cd(OH) ₂ + Ni(OH) ₂

Which of the following will occur when solutions of ZnSO₄(aq) and MgCl₂(aq) are mixed?

Identify the element being oxidized in the following reaction. 2KBr + F₂ $\rarr$ Br₂ + 2KF

Predict the products of the following single replacement reaction. Ni(s) + Cu(NO₃) ₂(aq) $\rarr$

Identify the element being oxidized in the following reaction. 4Al + 3O₂ $\rarr$ 2Al₂O₃

For the chlorate ion, ClO₃^- , what are the oxidation states of the Cl and O, respectively?

Thorium metal is prepared by reacting thorium oxide with calcium as shown below. ThO₂ + 2Ca $\rarr$ Th + 2CaO Which substance is oxidized in this process?

Write the balanced molecular and net ionic equations for the reaction that would occur between CaCl₂(aq)and Na₂CO₃(aq).Be sure to include the correct states in your final equations.If no reaction is expected, write "no reaction."

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O Which substance is reduced in this process?

Batteries in our cars generate electricity by the following chemical reaction. Pb + PbO₂ + 2H₂SO₄ $\rarr$ 2PbSO₄ + 2H₂O What is the oxidizing agent in this process?

Most compounds containing chlorides, bromides, and iodides are soluble except those containing Ag⁺, Hg₂²⁺, and Pb²⁺.

Identify the precipitate(s)formed when solutions of Hg₂(ClO₄)₂(aq), (NH₄)₂SO₄(aq), and Rb₂SO₄(aq)are mixed.

A 3.682 g sample of KClO₃ is dissolved in enough water to give 375.mL of solution.What is the chlorate ion concentration in this solution?