Question 1

Give an example of a diprotic acid.

Accepted Answer

The answer of Give an example of a diprotic acid....

Question 2

Thorium metal is prepared by reacting thorium oxide with calcium.
ThO2 + 2Ca $\rarr$ Th + 2CaO
What is the reducing agent in this process?

Accepted Answer

Question 3

Give an example of a monoprotic acid.

Accepted Answer

The answer of Give an example of a monoprotic acid....

Question 4

In the following chemical reaction the oxidizing agent is 
5H2O2 + 2MnO4- + 6H+ $\rarr$2Mn2+ + 8H2O + 5O2

Accepted Answer

A) H2O2 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) O2 
A) H2O2 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) O2

Question 5

Based on the solubility rules, which one of the following should be soluble in water?

Accepted Answer

A) AgBr 
B) AgCl 
C) Ag2CO3 
D) AgNO3 
E) Ag2S 
A) AgBr 
B) AgCl 
C) Ag2CO3 
D) AgNO3 
E) Ag2S

Question 6

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

Accepted Answer

A) True 
 B)False

Question 7

Identify the following compounds as a strong electrolytes, weak electrolytes, or nonelectrolytes: KNO3, KNO2, HNO3, HNO2,

Accepted Answer

KNO₃, KNO₂, and HNO₃ ar

Question 8

A piece of zinc metal was added to an aqueous solution of lead(II)nitrate.After some time it was observed that the zinc metal had appeared to fall apart and a solid had accumulated at the bottom of the reaction vessel.
Write the balanced chemical equation for this reaction.

Accepted Answer

Zn(s)+ Pb(

Question 9

Identify the following compound as an electrolyte or nonelectrolyte: C12H22O11(sucrose).

Accepted Answer

Question 10

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

Question 11

What is the chemical formula of the salt produced by the complete neutralization of sodium hydroxide with sulfuric acid?

Accepted Answer

A) Na2SO4 
B) Na2(SO4)3 
C) Na(SO4)2 
D) NaSO3 
E) Na3SO4 
A) Na2SO4 
B) Na2(SO4)3 
C) Na(SO4)2 
D) NaSO3 
E) Na3SO4

Question 12

When 50.0 mL of a 0.3000 M AgNO3 solution is added to 50.0 mL of a solution of MgCl2, an AgCl precipitate forms immediately. The precipitate is then filtered from the solution, dried, and weighed. If the recovered AgCl is found to have a mass of 0.1183 g, what as the concentration of magnesium ions in the original MgCl2 solution?

Accepted Answer

A) 0.300 M 
B) 8.25 * 10-3 M 
C) 1.65 * 10-2 M 
D) 2.06 * 10-5 M 
E) 4.13 * 10-3 M 
A) 0.300 M 
B) 8.25 * 10-3 M 
C) 1.65 * 10-2 M 
D) 2.06 * 10-5 M 
E) 4.13 * 10-3 M

Question 13

Describe the procedure used to make 3.0 liters of a 2.0 M KCl solution, starting with solid KCl and water.

Accepted Answer

Determine the molar mass of KC

Question 14

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

Accepted Answer

Question 15

Which of the following compounds is a nonelectrolyte?

Accepted Answer

A) NaOH 
B) HNO3 
C) C2H6O (ethanol) 
D) KF 
E) CH3COOH (acetic acid) 
A) NaOH 
B) HNO3 
C) C2H6O (ethanol) 
D) KF 
E) CH3COOH (acetic acid)

Question 16

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

Accepted Answer

A) NaCl 
B) MgBr2 
C) FeCl2 
D) AgBr 
E) ZnCl2 
A) NaCl 
B) MgBr2 
C) FeCl2 
D) AgBr 
E) ZnCl2

Question 17

Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100.cm3. What is the concentration of nitrate ions in this solution?

Accepted Answer

A) 32.4M 
B) 22.5M 
C) 11.3M 
D) 16.2M 
E) 8.10M 
A) 32.4M 
B) 22.5M 
C) 11.3M 
D) 16.2M 
E) 8.10M

Question 18

Which one of the following is a redox reaction?

Accepted Answer

A) 2Al(s)+ 3H2SO4(aq)$\rarr$ Al2(SO4)3(aq)+ 3H2(g) 
B) 2KBr(aq)+ Pb(NO3)2(aq)$\rarr$2KNO3(aq)+ PbBr2(s) 
C) CaBr2(aq)+ H2SO4(aq)$\rarr$ CaSO4(s)+ 2HBr(g) 
D) H+(aq)+ OH- (aq)$\rarr$H2O(l) 
E) CO32- (aq)+ HSO4-(aq)$\rarr$ HCO3- (aq)+ SO42- (aq) 
A) 2Al(s)+ 3H2SO4(aq)$\rarr$ Al2(SO4)3(aq)+ 3H2(g) 
B) 2KBr(aq)+ Pb(NO3)2(aq)$\rarr$2KNO3(aq)+ PbBr2(s) 
C) CaBr2(aq)+ H2SO4(aq)$\rarr$ CaSO4(s)+ 2HBr(g) 
D) H+(aq)+ OH- (aq)$\rarr$H2O(l) 
E) CO32- (aq)+ HSO4-(aq)$\rarr$ HCO3- (aq)+ SO42- (aq)

Question 19

The solubility of Ba(NO3)2 is 130.5 grams per liter at 0°C. How many moles of dissolved salt are present in 4.0 liters of a saturated solution of Ba(NO3)2 at 0ºC?

Accepted Answer

Question 20

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

Accepted Answer

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

Exam 4: Reactions in Aqueous Solution

Give an example of a diprotic acid.

Thorium metal is prepared by reacting thorium oxide with calcium. ThO2 + 2Ca →\rarr→ Th + 2CaO What is the reducing agent in this process?

Give an example of a monoprotic acid.

In the following chemical reaction the oxidizing agent is 5H2O2 + 2MnO4- + 6H+ →\rarr→ 2Mn2+ + 8H2O + 5O2

Based on the solubility rules, which one of the following should be soluble in water?

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

Identify the following compounds as a strong electrolytes, weak electrolytes, or nonelectrolytes: KNO3, KNO2, HNO3, HNO2,

A piece of zinc metal was added to an aqueous solution of lead(II)nitrate.After some time it was observed that the zinc metal had appeared to fall apart and a solid had accumulated at the bottom of the reaction vessel. Write the balanced chemical equation for this reaction.

Identify the following compound as an electrolyte or nonelectrolyte: C12H22O11(sucrose).

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?

What is the chemical formula of the salt produced by the complete neutralization of sodium hydroxide with sulfuric acid?

Describe the procedure used to make 3.0 liters of a 2.0 M KCl solution, starting with solid KCl and water.

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

Which of the following compounds is a nonelectrolyte?

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

Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100.cm3. What is the concentration of nitrate ions in this solution?

Which one of the following is a redox reaction?

The solubility of Ba(NO3)2 is 130.5 grams per liter at 0°C. How many moles of dissolved salt are present in 4.0 liters of a saturated solution of Ba(NO3)2 at 0ºC?

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

Chemistry: The Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Gases

Thermo-Chemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Chemistry in the Atmosphere

Entropy, Free Energy, and Equilibrium

Electrochemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Nuclear Chemistry

Organic Chemistry

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Filters

Thorium metal is prepared by reacting thorium oxide with calcium. ThO₂ + 2Ca $\rarr$ Th + 2CaO What is the reducing agent in this process?

In the following chemical reaction the oxidizing agent is 5H₂O₂ + 2MnO₄^- + 6H⁺ $\rarr$ 2Mn²⁺ + 8H₂O + 5O₂

Identify the following compounds as a strong electrolytes, weak electrolytes, or nonelectrolytes: KNO₃, KNO₂, HNO₃, HNO₂,

Identify the following compound as an electrolyte or nonelectrolyte: C₁₂H₂₂O₁₁(sucrose).

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?

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

Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100.cm³. What is the concentration of nitrate ions in this solution?

The solubility of Ba(NO₃)₂ is 130.5 grams per liter at 0°C. How many moles of dissolved salt are present in 4.0 liters of a saturated solution of Ba(NO₃)₂ at 0ºC?