Question 1

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)  CH3OHF) All of the above
G) D) and E)

Question 2

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 MF) C) and D)
G) A) and B)

Question 3

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.E) B) and D)
F) None of the above

Question 4

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)  Na2SF) B) and E)
G) B) and C)

Question 5

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 6

What is the oxidation number of iodine in I2?

Accepted Answer

A)  -1
B)  0
C)  +1
D)  +7
E)  -7F) D) and E)
G) A) and D)

Question 7

What is the oxidation number of Cr in Cr2O72-?

Accepted Answer

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

Question 8

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) F) A) and E)
G) B) and C) C

Question 9

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

Accepted Answer

A)  liquid
B)  gas
C)  solvent
D)  solid
E)  soluteF) A) and E)
G) A) and B)

Question 10

H3PO4 is a strong acid.

Accepted Answer

A) True 
 B)False  False

Question 11

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 12

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

Accepted Answer

A)  Cu
B)  H
C)  S
D)  O
E)  H2OF) All of the above
G) A) and C)

Question 13

Which is a weak base?

Accepted Answer

A)  NH3
B)  Ca(OH) 2
C)  Ba(OH) 2
D)  NaOH
E)  CH3COOHF) A) and D)
G) B) and E)

Question 14

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 15

___________ 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 16

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 ionsF) All of the above
G) B) and C)

Question 17

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) F) A) and E)
G) A) and C)

Question 18

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)  NO3F) None of the above
G) B) and E)

Question 19

Which of the following is a weak acid?

Accepted Answer

A)  H2SO4
B)  HNO3
C)  HF
D)  HBr
E)  HClF) All of the above
G) A) and C) C

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+F) A) and C)
G) C) and D)

Exam 4: Reactions in Aqueous Solutions

Which of the following is a strong base?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Which statement is false concerning oxidation numbers?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

What is the oxidation number of iodine in I2?

Correct AnswerverifiedShow Answer

What is the oxidation number of Cr in Cr2O72-?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

H3PO4 is a strong acid.

Correct AnswerverifiedFalse

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

Correct Answerverifieda = 0,b = ...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Which is a weak base?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Which of the following is a weak acid?

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

Correct Answer
verified

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?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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.

Correct Answer
verified

What is the oxidation number of iodine in I₂?

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified
C

Correct Answer
verified

H₃PO₄ is a strong acid.

Correct Answer
verified
False

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

Correct Answer
verified
a = 0,b = ...
View Answer

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

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified
C

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

Correct Answer
verified