Question 1

Give an example of a diprotic acid.

Accepted Answer

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

Question 2

Categorize the following reaction as an acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction.
H2SO4(aq)+ 2 KOH(aq)$\rarr$ 2 H2O(l)+ K2SO4(aq)

Accepted Answer

Acid-base

Question 3

Identify the major ions present in an aqueous HNO3 solution.

Accepted Answer

A) HN+, O2- 
B) OH-, NO3- 
C) OH-, NO 
D) H+, N3-, O2- 
E) H+, NO3- 
A) HN+, O2- 
B) OH-, NO3- 
C) OH-, NO 
D) H+, N3-, O2- 
E) H+, NO3-

Question 4

What element is oxidized in the following chemical reaction? 
H2SO4 + Cd(OH)2$\rarr$2H2O + CdSO4

Accepted Answer

A) H 
B) S 
C) O 
D) Cd 
E) this is not a redox reaction 
A) H 
B) S 
C) O 
D) Cd 
E) this is not a redox reaction

Question 5

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 6

In the following chemical reaction the oxidizing agent is 
5S + 6KNO3 + 2CaCO3 $\rarr$3K2SO4 + 2CaSO4 + CO2 + 3N2

Accepted Answer

A) S 
B) N2 
C) KNO3 
D) CaSO4 
E) CaCO3 
A) S 
B) N2 
C) KNO3 
D) CaSO4 
E) CaCO3

Question 7

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 8

Which of the following compounds is a weak electrolyte?

Accepted Answer

A) HCl 
B) CH3COOH (acetic acid) 
C) C6H12O6 (glucose) 
D) O2 
E) NaCl 
A) HCl 
B) CH3COOH (acetic acid) 
C) C6H12O6 (glucose) 
D) O2 
E) NaCl

Question 9

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 10

Give an example of a monoprotic acid.

Accepted Answer

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

Question 11

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 12

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 appeared to fall apart and a solid had accumulated at the bottom of the reaction vessel.
Write the net ionic equation for this reaction.

Accepted Answer

Zn(s)+ Pb²⁺(

Question 13

During a titration the following data were collected.A 10.mL portion of an unknown monoprotic acid solution was titrated with 1.0 M NaOH; 40.mL of the base were required to neutralize the sample.What is the molarity of the acid solution?

Accepted Answer

The answer of During a titration the following data were...

Question 14

Which of the following represents a precipitation reaction?

Accepted Answer

A) 2H2(g)+ O2(g)$\rarr$2H2O(l) 
B) CaBr2(aq)+ H2SO4(aq)$\rarr$CaSO4(s)+ 2HBr(g) 
C) 2KNO3(s)$\rarr$2KNO2(s)+ O2(g) 
D) 2KBr(aq)+ Cl2(g)$\rarr$2KCl(aq)+ Br2(l) 
E) 2Al(s)+ 3H2SO4(aq)$\rarr$Al2(SO4)3(aq)+ 3H2(g) 
A) 2H2(g)+ O2(g)$\rarr$2H2O(l) 
B) CaBr2(aq)+ H2SO4(aq)$\rarr$CaSO4(s)+ 2HBr(g) 
C) 2KNO3(s)$\rarr$2KNO2(s)+ O2(g) 
D) 2KBr(aq)+ Cl2(g)$\rarr$2KCl(aq)+ Br2(l) 
E) 2Al(s)+ 3H2SO4(aq)$\rarr$Al2(SO4)3(aq)+ 3H2(g)

Question 15

How many total electrons are transferred in the following reaction? 
B2H6(g)+ 3O2(g)$\rarr$F1F1F1S1?F1F1F102F1F1F1S1?F1F1F103(s)+ 3H2O(l)

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 6 
E) 12 
A) 2 
B) 3 
C) 4 
D) 6 
E) 12

Question 16

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: NH4NO3

Accepted Answer

Question 17

Identify the precipitate(s)formed when solutions of NaOH(aq), Ca(ClO3)2(aq), and Ba(OH)2(aq)are mixed.

Accepted Answer

Question 18

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: CH3COOH.

Accepted Answer

Question 19

Identify the elements that are oxidized and reduced in the following reaction. KClO3(aq)+ 6HBr(aq)$\rarr$ KCl(aq)+ 3Br2(l)+ 3H2O(l)

Accepted Answer

A) Br is oxidized and Cl is reduced 
B) Cl is oxidized and H is reduced 
C) H is oxidized and O is reduced 
D) O is oxidized and Cl is reduced 
E) Cl is oxidized and Br is reduced 
A) Br is oxidized and Cl is reduced 
B) Cl is oxidized and H is reduced 
C) H is oxidized and O is reduced 
D) O is oxidized and Cl is reduced 
E) Cl is oxidized and Br is reduced

Question 20

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

Accepted Answer

Exam 4: Reactions in Aqueous Solutions

Give an example of a diprotic acid.

Categorize the following reaction as an acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction. H2SO4(aq)+ 2 KOH(aq) →\rarr→ 2 H2O(l)+ K2SO4(aq)

Identify the major ions present in an aqueous HNO3 solution.

What element is oxidized in the following chemical reaction? H2SO4 + Cd(OH)2 →\rarr→ 2H2O + CdSO4

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

In the following chemical reaction the oxidizing agent is 5S + 6KNO3 + 2CaCO3 →\rarr→ 3K2SO4 + 2CaSO4 + CO2 + 3N2

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 weak electrolyte?

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

Give an example of a monoprotic acid.

Which one of the following is a redox reaction?

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 appeared to fall apart and a solid had accumulated at the bottom of the reaction vessel. Write the net ionic equation for this reaction.

During a titration the following data were collected.A 10.mL portion of an unknown monoprotic acid solution was titrated with 1.0 M NaOH; 40.mL of the base were required to neutralize the sample.What is the molarity of the acid solution?

Which of the following represents a precipitation reaction?

How many total electrons are transferred in the following reaction? B2H6(g)+ 3O2(g) →\rarr→ ?2?3(s)+ 3H2O(l)

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: NH4NO3

Identify the precipitate(s)formed when solutions of NaOH(aq), Ca(ClO3)2(aq), and Ba(OH)2(aq)are mixed.

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: CH3COOH.

Identify the elements that are oxidized and reduced in the following reaction. KClO3(aq)+ 6HBr(aq) →\rarr→ KCl(aq)+ 3Br2(l)+ 3H2O(l)

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

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Gases

Thermochemistry

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

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Categorize the following reaction as an acid-base neutralization, precipitation, combination, decomposition, combustion, displacement, or disproportionation reaction. H₂SO₄(aq)+ 2 KOH(aq) $\rarr$ 2 H₂O(l)+ K₂SO₄(aq)

Identify the major ions present in an aqueous HNO₃solution.

What element is oxidized in the following chemical reaction? H₂SO₄ + Cd(OH)₂ $\rarr$ 2H₂O + CdSO₄

In the following chemical reaction the oxidizing agent is 5S + 6KNO₃ + 2CaCO₃ $\rarr$ 3K₂SO₄ + 2CaSO₄ + CO₂ + 3N₂

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

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

How many total electrons are transferred in the following reaction? B₂H₆(g)+ 3O₂(g) $\rarr$ ?₂?₃(s)+ 3H₂O(l)

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: NH₄NO₃

Identify the precipitate(s)formed when solutions of NaOH(aq), Ca(ClO₃)₂(aq), and Ba(OH)₂(aq)are mixed.

Identify the following compound as a strong electrolyte, weak electrolyte, or nonelectrolyte: CH₃COOH.

Identify the elements that are oxidized and reduced in the following reaction. KClO₃(aq)+ 6HBr(aq) $\rarr$ KCl(aq)+ 3Br₂(l)+ 3H₂O(l)

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