Question 1

Balance the following oxidation-reduction reaction in acid solution:
Fe(s) → Fe2+ + H2(g) 
The sum of the coefficients is ________.

Accepted Answer

A)  2
B)  5
C)  8
D)  7
E)  9F) A) and B)
G) A) and C)

Question 2

According to the balanced equation shown below,4.00 moles of oxalic acid,H2C2O4,reacts with ________ moles of permanganate,MnO4-.
5 H2C2O4(aq) + 2 MnO4-(aq) + 6 H+(aq) → 10 CO2(g) + Mn2+(aq) + 8 H2O(l)

Accepted Answer

A)  1.60
B)  4.00
C)  8.00
D)  9.00E) A) and C)
F) B) and C)

Question 3

Indicate whether a precipitate forms by completing equation
Na+(aq) + Cl-(aq) + NO3-(aq) + K+(aq) → ?

Accepted Answer

A)  NaCl(s) + NO3-(aq) + K+(aq)  
B)  NaNO3(s) + K+(aq)  + Cl-(aq)  
C)  KCl(s) + Na+(aq) + NO3-(aq)  
D)  KNO3(s) + Na+(aq) + Cl-(aq)  
E)  no reactionF) None of the above
G) A) and D)

Question 4

Which of the following compounds is quite insoluble in water,but would liberate a gas when treated with aqueous acetic acid?

Accepted Answer

A)  K2CO3 
B)  K2SO4 
C)  CaCO3 
D)  CaSO4 
E)  AgClF) A) and B)
G) A) and C)

Question 5

What concentration of Fe2(SO4) 3(aq) is required for the solution to have [Fe3+(aq) ] = 0.32 M?

Accepted Answer

A)  0.16 M
B)  0.32 M
C)  0.64 M
D)  0.080 M
E)  0.12 MF) D) and E)
G) C) and D)

Question 6

The substance KClO4 in water solution is a:

Accepted Answer

A)  strong electrolyte
B)  nonelectrolyte
C)  weak electrolyte
D)  strong base
E)  weak acidF) A) and C)
G) A) and B)

Question 7

Select a statement that best describes the oxidation process.

Accepted Answer

A)  In the oxidation process all elements change oxidation state.
B)  In the oxidation process all elements experience an increase in oxidation state.
C)  In the oxidation process some elements change their oxidation state.
D)  In the oxidation process some elements experience oxidation state increase.
E)  In the oxidation process only oxygen increases its oxidation state.F) A) and B)
G) C) and D)

Question 8

The substance NH3 is a:

Accepted Answer

A)  weak acid
B)  strong acid
C)  salt
D)  weak base
E)  strong baseF) B) and E)
G) A) and B)

Question 9

An insoluble compound will dissolve to an appreciable amount in water.

Accepted Answer

A) True 
 B)False

Question 10

Lead ions can be precipitated from aqueous solutions by the addition of aqueous iodide: -1 HI(aq) must be added to a solution containing 0.700 mol of   To completely precipitate the lead? A) 2.54 × 10-3 mL B) 394 mL C) 197 mL D) 0.197 mL E) 0.394 mL" class="answers-bank-image d-inline" rel="preload" >
(aq) + -1 HI(aq) must be added to a solution containing 0.700 mol of   To completely precipitate the lead? A) 2.54 × 10-3 mL B) 394 mL C) 197 mL D) 0.197 mL E) 0.394 mL" class="answers-bank-image d-inline" rel="preload" >
(aq) → -1 HI(aq) must be added to a solution containing 0.700 mol of   To completely precipitate the lead? A) 2.54 × 10-3 mL B) 394 mL C) 197 mL D) 0.197 mL E) 0.394 mL" class="answers-bank-image d-inline" rel="preload" >
(s) 
Lead iodide is virtually insoluble in water so that the reaction appears to go to completion.How many millilitres of 3.550 mol L-1 HI(aq) must be added to a solution containing 0.700 mol of -1 HI(aq) must be added to a solution containing 0.700 mol of   To completely precipitate the lead? A) 2.54 × 10-3 mL B) 394 mL C) 197 mL D) 0.197 mL E) 0.394 mL" class="answers-bank-image d-inline" rel="preload" >
To completely precipitate the lead?

Accepted Answer

A)  2.54 × 10-3 mL
B)  394 mL
C)  197 mL
D)  0.197 mL
E)  0.394 mLF) B) and C)
G) A) and C)

Question 11

The neutralization of 25.0 mL of 0.24 M HCl requires 5.0 mL of NaOH.What is the molarity of the NaOH solution?

Accepted Answer

A)  0.6 M
B)  2.4 M
C)  5.0 M
D)  0.048 M
E)  1.2 MF) D) and E)
G) A) and B)

Question 12

In an acid-base neutralization reaction,38.74 mL of 0.500 mol L-1 potassium hydroxide reacts with 50.00 mL of sulfuric acid solution.What is the concentration of the H2SO4 solution?

Accepted Answer

A)  0.194 mol L-1
B)  0.387 mol L-1
C)  0.775 mol L-1
D)  1.29 mol L-1E) C) and D)
F) A) and B)

Question 13

In which of the following pairs is the oxidation number for the underlined element INCORRECT?

Accepted Answer

A)  ClO4-/(+7) 
B)  S2O32-/(+2) 
C)  Fe2O3/(+3) 
D)  HCO3-/(+3) 
E)  CO2/(+4) F) A) and E)
G) A) and C)

Question 14

Which of the following compounds is an Arrhenius base?

Accepted Answer

A)  CH3OH
B)  CH3CO2H
C)  HOCl
D)  CsOHE) All of the above
F) A) and B)

Question 15

How many millilitres of 0.550 mol L-1 hydriodic acid are needed to react with 15.00 mL of 0.217 mol L-1 CsOH?
HI(aq) + CsOH(aq) → CsI(aq) + H2O(l)

Accepted Answer

A)  0.0263 mL
B)  0.169 mL
C)  5.92 mL
D)  38.0 mLE) None of the above
F) A) and B)

Question 16

How many electrons are transferred when the perchlorate ion is converted to chloride?

Accepted Answer

A)  8
B)  7
C)  9
D)  6
E)  5F) A) and B)
G) A) and C)

Question 17

Which of the following,in aqueous solution,is most likely to behave as a weak acid?

Accepted Answer

A)  HCl
B)  HCN
C)  NaCl
D)  NaCN
E)  NH3F) A) and E)
G) C) and D)

Question 18

The substance BaCl2 is a:

Accepted Answer

A)  salt
B)  weak acid
C)  strong base
D)  weak base
E)  strong acidF) A) and D)
G) B) and E)

Question 19

Balance the following equation in basic solution:
Br2 + Mn2+ → MnO2 + Br- 
The sum of the coefficients is ________.

Accepted Answer

A)  8
B)  15
C)  12
D)  17
E)  11F) A) and D)
G) D) and E)

Question 20

Which of the following pairs of aqueous solutions will give a precipitate when mixed?

Accepted Answer

A)  K3PO4 and CaCl2
B)  LiClO4 and Ba(OH) 2
C)  AgNO3 and Ca(ClO4) 2
D)  NaCl and K(CH3COO) 
E)  Sr(NO3) 2 and KIF) A) and B)
G) B) and C)

Exam 5: Introduction to Reactions in Aqueous Solutions

An insoluble compound will dissolve to an appreciable amount in water.

Correct Answer
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Select a statement that best describes the oxidation process.

Correct Answer
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In which of the following pairs is the oxidation number for the underlined element INCORRECT?

Correct Answer
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How many millilitres of 0.550 mol L^-1 hydriodic acid are needed to react with 15.00 mL of 0.217 mol L^-1 CsOH? HI(aq) + CsOH(aq) → CsI(aq) + H₂O(l)

Correct Answer
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What concentration of Fe₂(SO₄) ₃(aq) is required for the solution to have [Fe³⁺(aq) ] = 0.32 M?

Correct Answer
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How many electrons are transferred when the perchlorate ion is converted to chloride?

Correct Answer
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The substance BaCl₂ is a:

Correct Answer
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Which of the following compounds is an Arrhenius base?

Correct Answer
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Balance the following oxidation-reduction reaction in acid solution: Fe(s) → Fe²⁺ + H₂(g) The sum of the coefficients is ________.

Correct Answer
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The substance KClO₄ in water solution is a:

Correct Answer
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Which of the following compounds is quite insoluble in water,but would liberate a gas when treated with aqueous acetic acid?

Correct Answer
verified

The substance NH₃ is a:

Correct Answer
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The neutralization of 25.0 mL of 0.24 M HCl requires 5.0 mL of NaOH.What is the molarity of the NaOH solution?

Correct Answer
verified

Indicate whether a precipitate forms by completing equation Na⁺(aq) + Cl^-(aq) + NO₃^-(aq) + K⁺(aq) → ?

Correct Answer
verified

In an acid-base neutralization reaction,38.74 mL of 0.500 mol L^-1 potassium hydroxide reacts with 50.00 mL of sulfuric acid solution.What is the concentration of the H₂SO₄ solution?

Correct Answer
verified

According to the balanced equation shown below,4.00 moles of oxalic acid,H₂C₂O₄,reacts with ________ moles of permanganate,MnO₄^-. 5 H₂C₂O₄(aq) + 2 MnO₄^-(aq) + 6 H⁺^(aq) → 10 CO₂(g) + Mn²⁺(aq) + 8 H₂O(l)

Correct Answer
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Which of the following,in aqueous solution,is most likely to behave as a weak acid?

Correct Answer
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Balance the following equation in basic solution: Br₂ + Mn²⁺ → MnO₂ + Br^- The sum of the coefficients is ________.

Correct Answer
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Correct Answer
verified

Which of the following pairs of aqueous solutions will give a precipitate when mixed?

Correct Answer
verified

Exam 5: Introduction to Reactions in Aqueous Solutions

An insoluble compound will dissolve to an appreciable amount in water.

Correct AnswerverifiedShow Answer

Select a statement that best describes the oxidation process.

Correct AnswerverifiedShow Answer

In which of the following pairs is the oxidation number for the underlined element INCORRECT?

Correct AnswerverifiedShow Answer

How many millilitres of 0.550 mol L-1 hydriodic acid are needed to react with 15.00 mL of 0.217 mol L-1 CsOH? HI(aq) + CsOH(aq) → CsI(aq) + H2O(l)

Correct AnswerverifiedShow Answer

What concentration of Fe2(SO4) 3(aq) is required for the solution to have [Fe3+(aq) ] = 0.32 M?

Correct AnswerverifiedShow Answer

How many electrons are transferred when the perchlorate ion is converted to chloride?

Correct AnswerverifiedShow Answer

The substance BaCl2 is a:

Correct AnswerverifiedShow Answer

Which of the following compounds is an Arrhenius base?

Correct AnswerverifiedShow Answer

Balance the following oxidation-reduction reaction in acid solution: Fe(s) → Fe2+ + H2(g) The sum of the coefficients is ________.

Correct AnswerverifiedShow Answer

The substance KClO4 in water solution is a:

Correct AnswerverifiedShow Answer

Which of the following compounds is quite insoluble in water,but would liberate a gas when treated with aqueous acetic acid?

Correct AnswerverifiedShow Answer

The substance NH3 is a:

Correct AnswerverifiedShow Answer

The neutralization of 25.0 mL of 0.24 M HCl requires 5.0 mL of NaOH.What is the molarity of the NaOH solution?

Correct AnswerverifiedShow Answer

Indicate whether a precipitate forms by completing equation Na+(aq) + Cl-(aq) + NO3-(aq) + K+(aq) → ?

Correct AnswerverifiedShow Answer

In an acid-base neutralization reaction,38.74 mL of 0.500 mol L-1 potassium hydroxide reacts with 50.00 mL of sulfuric acid solution.What is the concentration of the H2SO4 solution?

Correct AnswerverifiedShow Answer

According to the balanced equation shown below,4.00 moles of oxalic acid,H2C2O4,reacts with ________ moles of permanganate,MnO4-. 5 H2C2O4(aq) + 2 MnO4-(aq) + 6 H+(aq) → 10 CO2(g) + Mn2+(aq) + 8 H2O(l)

Correct AnswerverifiedShow Answer

Which of the following,in aqueous solution,is most likely to behave as a weak acid?

Correct AnswerverifiedShow Answer

Balance the following equation in basic solution: Br2 + Mn2+ → MnO2 + Br- The sum of the coefficients is ________.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following pairs of aqueous solutions will give a precipitate when mixed?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
verified

Correct Answer
verified

How many millilitres of 0.550 mol L^-1 hydriodic acid are needed to react with 15.00 mL of 0.217 mol L^-1 CsOH? HI(aq) + CsOH(aq) → CsI(aq) + H₂O(l)

Correct Answer
verified

What concentration of Fe₂(SO₄) ₃(aq) is required for the solution to have [Fe³⁺(aq) ] = 0.32 M?

Correct Answer
verified

Correct Answer
verified

The substance BaCl₂ is a:

Correct Answer
verified

Correct Answer
verified

Balance the following oxidation-reduction reaction in acid solution: Fe(s) → Fe²⁺ + H₂(g) The sum of the coefficients is ________.

Correct Answer
verified

The substance KClO₄ in water solution is a:

Correct Answer
verified

Correct Answer
verified

The substance NH₃ is a:

Correct Answer
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Correct Answer
verified

Indicate whether a precipitate forms by completing equation Na⁺(aq) + Cl^-(aq) + NO₃^-(aq) + K⁺(aq) → ?

Correct Answer
verified

In an acid-base neutralization reaction,38.74 mL of 0.500 mol L^-1 potassium hydroxide reacts with 50.00 mL of sulfuric acid solution.What is the concentration of the H₂SO₄ solution?

Correct Answer
verified

According to the balanced equation shown below,4.00 moles of oxalic acid,H₂C₂O₄,reacts with ________ moles of permanganate,MnO₄^-. 5 H₂C₂O₄(aq) + 2 MnO₄^-(aq) + 6 H⁺^(aq) → 10 CO₂(g) + Mn²⁺(aq) + 8 H₂O(l)

Correct Answer
verified

Correct Answer
verified

Balance the following equation in basic solution: Br₂ + Mn²⁺ → MnO₂ + Br^- The sum of the coefficients is ________.

Correct Answer
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Correct Answer
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Correct Answer
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