Question 1

Balance the following oxidation-reduction equation: Al(s)+ Ag+(aq)→ Al3+(aq)+ Ag(s)

Accepted Answer

A) Al(s)+ Ag+(aq)→ Al3+(aq)+ Ag(s) 
B) 3Al(s)+ Ag+(aq)→ 3Al3+(aq)+ Ag(s) 
C) Al(s)+ 3Ag+(aq)→ Al3+(aq)+ 3Ag(s) 
D) 3Al(s)+ Ag+(aq)→ Al3+(aq)+ 3Ag(s) 
E) Al(s)+ 3Ag+(aq)→ 3Al3+(aq)+ Ag(s) 
A) Al(s)+ Ag+(aq)→ Al3+(aq)+ Ag(s) 
B) 3Al(s)+ Ag+(aq)→ 3Al3+(aq)+ Ag(s) 
C) Al(s)+ 3Ag+(aq)→ Al3+(aq)+ 3Ag(s) 
D) 3Al(s)+ Ag+(aq)→ Al3+(aq)+ 3Ag(s) 
E) Al(s)+ 3Ag+(aq)→ 3Al3+(aq)+ Ag(s) C

Question 2

H3PO4 is a strong acid.

Accepted Answer

A) True 
 B)False  False

Question 3

Which of the following is a weak acid?

Accepted Answer

A) H2SO4 
B) HNO3 
C) HF 
D) HBr 
E) HCl 
A) H2SO4 
B) HNO3 
C) HF 
D) HBr 
E) HCl C

Question 4

What is the oxidation number of Cr in Cr2O72-?

Accepted Answer

A) -12 
B) -7 
C) -2 
D) +6 
E) +7 
A) -12 
B) -7 
C) -2 
D) +6 
E) +7

Question 5

In each of the following cases,write down the oxidation number of the indicated atom.
a.P in P4
b.C in C2H6
c.S in H2SO4
d.Mn in MnO4-
e.P in Na3PO4

Accepted Answer

a = 0,b =

Question 6

Which represents the result of mixing equal volumes of 1 M HCl and 1 M NH3 solutions? (Each sphere represents 1 mol of ions.)
A.   
B.   
C.   
D.   
E.

Accepted Answer

Question 7

Which element is reduced in the following reaction? Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O

Accepted Answer

A) Cu 
B) H 
C) S 
D) O 
E) H2O 
A) Cu 
B) H 
C) S 
D) O 
E) H2O

Question 8

A(n)___________ ____________ is oxidized during a redox reaction and causes another substance to undergo reduction.

Accepted Answer

The answer of A(n)___________ ____________ is oxidized during a redox...

Question 9

What is the oxidation number of iodine in I2?

Accepted Answer

A) -1 
B) 0 
C) +1 
D) +7 
E) -7 
A) -1 
B) 0 
C) +1 
D) +7 
E) -7

Question 10

Which statement is false concerning oxidation numbers?

Accepted Answer

A) An element's oxidation number is constant and unchanging. 
B) Atoms of free elements have an oxidation number of zero. 
C) An atom's oxidation state signifies the number of charges for that atom in a molecule. 
D) Oxidation numbers allow easy identification of which atoms gained or lost electrons. 
A) An element's oxidation number is constant and unchanging. 
B) Atoms of free elements have an oxidation number of zero. 
C) An atom's oxidation state signifies the number of charges for that atom in a molecule. 
D) Oxidation numbers allow easy identification of which atoms gained or lost electrons.

Question 11

Which of the following is a strong base?

Accepted Answer

A) NH3 
B) Ca(OH)2 
C) Al(OH)3 
D) B(OH)3 
E) CH3OH 
A) NH3 
B) Ca(OH)2 
C) Al(OH)3 
D) B(OH)3 
E) CH3OH

Question 12

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) 9.82 M 
B) 1.60 × 10-1 M 
C) 8.01 ×10-2 M 
D) 9.82 × 10-3 M 
E) 1.60 × 10-2 M 
A) 9.82 M 
B) 1.60 × 10-1 M 
C) 8.01 ×10-2 M 
D) 9.82 × 10-3 M 
E) 1.60 × 10-2 M

Question 13

Identify the net ionic equation for the following reaction: 2NaCl(aq)+ Hg2(NO3)2(aq)→ 2NaNO3(aq)+ Hg2Cl2(s)

Accepted Answer

A) Na+(aq)+ NO3- (aq)→ NaNO3(aq) 
B) Hg22+(aq)+ 2Cl-(aq)→ Hg2Cl2(s) 
C) 2Hg+(aq)+ 2Cl-(aq)→ 2HgCl(s) 
D) Hg2(NO3)2(aq)→ Hg22+(aq)+ 2NO3-(aq) 
E) Hg22+(aq)→ Hg2(s) 
A) Na+(aq)+ NO3- (aq)→ NaNO3(aq) 
B) Hg22+(aq)+ 2Cl-(aq)→ Hg2Cl2(s) 
C) 2Hg+(aq)+ 2Cl-(aq)→ 2HgCl(s) 
D) Hg2(NO3)2(aq)→ Hg22+(aq)+ 2NO3-(aq) 
E) Hg22+(aq)→ Hg2(s)

Question 14

Which salt is produced by the neutralization of sodium hydroxide with sulfuric acid?

Accepted Answer

A) Na2SO4 
B) Na2(SO4)3 
C) Na(SO4)2 
D) Na2SO3 
E) Na2S 
A) Na2SO4 
B) Na2(SO4)3 
C) Na(SO4)2 
D) Na2SO3 
E) Na2S

Question 15

How many sodium ions are present in 325 mL of 0.850 M Na2SO4?

Accepted Answer

A) 5.12 × 1023 Na ions 
B) 8.32 × 1022 Na ions 
C) 1.02 × 1024 Na ions 
D) 1.66 × 1023 Na ions 
E) 3.33 × 1023 Na ions 
A) 5.12 × 1023 Na ions 
B) 8.32 × 1022 Na ions 
C) 1.02 × 1024 Na ions 
D) 1.66 × 1023 Na ions 
E) 3.33 × 1023 Na ions

Question 16

What is reduced in the following reaction? Cu(NO3)2 + Zn → Zn(NO3)2 + Cu

Accepted Answer

A) Cu(NO3)2 
B) N 
C) O 
D) Zn 
E) NO3 
A) Cu(NO3)2 
B) N 
C) O 
D) Zn 
E) NO3

Question 17

Which substance is present in the smallest proportion in a solution?

Accepted Answer

A) liquid 
B) gas 
C) solvent 
D) solid 
E) solute 
A) liquid 
B) gas 
C) solvent 
D) solid 
E) solute

Question 18

Which is a weak base?

Accepted Answer

A) NH3 
B) Ca(OH)2 
C) Ba(OH)2 
D) NaOH 
E) CH3COOH 
A) NH3 
B) Ca(OH)2 
C) Ba(OH)2 
D) NaOH 
E) CH3COOH

Question 19

___________ is a concentration unit that is defined as the number of moles of solute per liters of solution.

Accepted Answer

The answer of ___________ is a concentration unit that is...

Question 20

What is the reducing agent in the following reaction? 5Fe2+(aq)+ MnO4-(aq)+ 8H+(aq)→ 5Fe3+(aq)+ Mn2+(aq)+ 4H2O(l)

Accepted Answer

A) Fe2+ 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) Fe3+ 
A) Fe2+ 
B) MnO4- 
C) H+ 
D) Mn2+ 
E) Fe3+

Exam 4: Reactions in Aqueous Solutions

Balance the following oxidation-reduction equation: Al(s)+ Ag+(aq)→ Al3+(aq)+ Ag(s)

H3PO4 is a strong acid.

Which of the following is a weak acid?

What is the oxidation number of Cr in Cr2O72-?

In each of the following cases,write down the oxidation number of the indicated atom. a.P in P4 b.C in C2H6 c.S in H2SO4 d.Mn in MnO4- e.P in Na3PO4

Which represents the result of mixing equal volumes of 1 M HCl and 1 M NH3 solutions? (Each sphere represents 1 mol of ions.) A. B. C. D. E.

Which element is reduced in the following reaction? Cu + 2H2SO4 → CuSO4 + SO2 + 2H2O

A(n)___________ ____________ is oxidized during a redox reaction and causes another substance to undergo reduction.

What is the oxidation number of iodine in I2?

Which statement is false concerning oxidation numbers?

Which of the following is a strong base?

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 net ionic equation for the following reaction: 2NaCl(aq)+ Hg2(NO3)2(aq)→ 2NaNO3(aq)+ Hg2Cl2(s)

Which salt is produced by the neutralization of sodium hydroxide with sulfuric acid?

How many sodium ions are present in 325 mL of 0.850 M Na2SO4?

What is reduced in the following reaction? Cu(NO3)2 + Zn → Zn(NO3)2 + Cu

Which substance is present in the smallest proportion in a solution?

Which is a weak base?

___________ is a concentration unit that is defined as the number of moles of solute per liters of solution.

What is the reducing agent in the following reaction? 5Fe2+(aq)+ MnO4-(aq)+ 8H+(aq)→ 5Fe3+(aq)+ Mn2+(aq)+ 4H2O(l)

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Intermolecular Forces and the Physical Properties of Liquids and Solids

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Filters

Balance the following oxidation-reduction equation: Al(s)+ Ag⁺(aq)→ Al³⁺(aq)+ Ag(s)

H₃PO₄ is a strong acid.

What is the oxidation number of Cr in Cr₂O₇^2-?

In each of the following cases,write down the oxidation number of the indicated atom. a.P in P₄ b.C in C₂H₆ c.S in H₂SO₄ d.Mn in MnO₄^- e.P in Na3PO₄

Which represents the result of mixing equal volumes of 1 M HCl and 1 M NH₃ solutions? (Each sphere represents 1 mol of ions.) A. B. C. D. E.

Which element is reduced in the following reaction? Cu + 2H₂SO₄ → CuSO₄ + SO₂ + 2H₂O

A(n)_ __ is oxidized during a redox reaction and causes another substance to undergo reduction.

What is the oxidation number of iodine in I₂?

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 net ionic equation for the following reaction: 2NaCl(aq)+ Hg₂(NO₃)2(aq)→ 2NaNO₃(aq)+ Hg₂Cl₂(s)

How many sodium ions are present in 325 mL of 0.850 M Na₂SO₄?

What is reduced in the following reaction? Cu(NO₃)₂ + Zn → Zn(NO₃)₂ + Cu

What is the reducing agent in the following reaction? 5Fe²⁺(aq)+ MnO₄^-(aq)+ 8H⁺(aq)→ 5Fe³⁺(aq)+ Mn²⁺(aq)+ 4H₂O(l)