Question 1

If aqueous solutions of Mg(C2H3O2) 2 and LiOH are mixed, which insoluble precipitate is formed?

Accepted Answer

A)   LiC2H3O2
B)   Li(C2H3O2) 2
C)   MgOH
D)   Mg(OH) 2
E)   CH3OHF) C) and D)
G) None of the above

Question 2

A 0.8838-g sample of an ionic compound containing bromide ions and an unknown metal cation is dissolved in water and treated with an excess of AgNO3. If 1.573 g of a AgBr precipitate forms, what is the percent by mass of Br in the original compound?

Accepted Answer

A)   62.13%
B)   75.72%
C)   56.19%
D)   42.55%
E)   37.87%F) C) and E)
G) D) and E)

Question 3

A 350-mL sample of 0.276 M HNO3 is partially neutralized by 125 mL of 0.120 M Ca(OH) 2. Find the concentration of nitric acid in the resulting solution.

Accepted Answer

A)   0.0429 M
B)   0.140 M
C)   0.172 M
D)   0.203 M
E)   0.773 MF) D) and E)
G) None of the above

Question 4

The diagram below represents the final mixture corresponding to which chemical process? (Each sphere represents 1 mole of ions.)

Accepted Answer

A)   Six moles of sodium metal are added to six moles of hydrochloric acid.
B)   Six moles of magnesium metal are added to six moles of hydrochloric acid.
C)   Six moles of aluminum metal are added to twelve moles of hydrochloric acid.
D)   Twelve moles of sodium metal are added to twelve moles of hydrochloric acid.
E)   Twelve moles of magnesium metal are added to twelve moles of hydrochloric acid.F) B) and E)
G) A) and C)

Question 5

A(n) ________ ________ is the name given for the substance that causes another substance to undergo oxidation.

Accepted Answer

The answer of A(n) ________ ________ is the name given...

Question 6

Which of these compounds is a nonelectrolyte?

Accepted Answer

A)   NaF
B)   HNO3
C)   CH3COOH (acetic acid) 
D)   NaOH
E)   C6H12O6 (glucose) F) B) and E)
G) A) and B)

Question 7

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) A) and C)
G) B) and C)

Question 8

If aqueous solutions of Na2CO3 and BaCl2 are mixed, which insoluble precipitate is formed?

Accepted Answer

A)   Ba2CO3
B)   BaCO3
C)   NaCl
D)   NaCl2
E)   BaOF) A) and B)
G) A) and E)

Question 9

Which is a strong base?

Accepted Answer

A)   LiOH
B)   CH3COOH
C)   NH3
D)   H3PO4
E)   HClO2F) D) and E)
G) A) and E)

Question 10

Which is a weak base?

Accepted Answer

A)   NH3
B)   Ca(OH) 2
C)   Ba(OH) 2
D)   NaOH
E)   CH3COOHF) D) and E)
G) None of the above

Question 11

If aqueous solutions of ammonium sulfide and copper(II)  nitrate are mixed, which insoluble precipitate is formed?

Accepted Answer

A)   CuS
B)   Cu2S
C)   NH4NO3
D)   NH4(NO3) 2
E)   CuSO4F) D) and E)
G) None of the above

Question 12

What volume of a 0.442 M NaOH solution is needed to neutralize 65.0 mL of a 0.296 M solution of HNO3?

Accepted Answer

A)   8.71 mL
B)   21.8 mL
C)   43.5 mL
D)   87.1 mL
E)   174 mLF) C) and E)
G) A) and D)

Question 13

What is the reducing agent in the following reaction? Mg + NiO2 + 2H2O → Mg(OH) 2 + Ni(OH) 2

Accepted Answer

A)   Mg
B)   NiO2
C)   H2O
D)   Mg(OH) 2
E)   Ni(OH) 2F) C) and D)
G) B) and E)

Question 14

A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution?

Accepted Answer

A)   2.18 M
B)   0.523 M
C)   0.349 M
D)   0.174 M
E)   0.0872 MF) A) and E)
G) B) and E)

Question 15

Identify the major ions present in an aqueous LiOH solution.

Accepted Answer

A)   Li2+, O-, H-
B)   Li+, OH-
C)   LiO-, H+
D)   Li+, O2-, H+
E)   Li-, OH+F) A) and D)
G) B) and E)

Question 16

Sodium hydroxide is water soluble.

Accepted Answer

A) True 
 B)False

Question 17

Based on the solubility rules, which of these processes will occur when solutions of ZnSO4(aq)  and MgCl2(aq)  are mixed?

Accepted Answer

A)   ZnCl2 will precipitate; Mg2+ and SO42- are spectator ions.
B)   ZnSO4 will precipitate; Mg2+ and Cl- are spectator ions.
C)   MgSO4 will precipitate; Zn2+ and Cl- are spectator ions.
D)   MgCl2 will precipitate; Zn2+ and SO42- are spectator ions.
E)   No precipitate will form.F) A) and B)
G) A) and E)

Question 18

Which accurately characterizes all nonelectrolyte solutions?

Accepted Answer

A)   Nonelectrolyte solutions contain molecules.
B)   Nonelectrolyte solutions conduct electricity.
C)   Nonelectrolyte solutions react with other solutions.
D)   Nonelectrolyte solutions do not conduct electricity.
E)   Nonelectrolyte solutions conduct heat.F) B) and E)
G) A) and B)

Question 19

Which of these compounds is a strong electrolyte?

Accepted Answer

A)   H2O
B)   N2
C)   CH3COOH (acetic acid) 
D)   C2H6O (ethanol) 
E)   KOHF) D) and E)
G) C) and D)

Question 20

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

Accepted Answer

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

Exam 4: Reactions in Aqueous Solutions

Identify the major ions present in an aqueous LiOH solution.

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What volume of a 0.442 M NaOH solution is needed to neutralize 65.0 mL of a 0.296 M solution of HNO3?

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

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A 50.0 mL sample of 0.436 M NH4NO3 is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution?

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A 0.8838-g sample of an ionic compound containing bromide ions and an unknown metal cation is dissolved in water and treated with an excess of AgNO3. If 1.573 g of a AgBr precipitate forms, what is the percent by mass of Br in the original compound?

Correct AnswerverifiedShow Answer

The diagram below represents the final mixture corresponding to which chemical process? (Each sphere represents 1 mole of ions.)

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Which of these compounds is a nonelectrolyte?

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What is the reducing agent in the following reaction? Mg + NiO2 + 2H2O → Mg(OH) 2 + Ni(OH) 2

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Which is a weak base?

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A(n) ________ ________ is the name given for the substance that causes another substance to undergo oxidation.

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Which accurately characterizes all nonelectrolyte solutions?

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Which is a strong base?

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Which of these compounds is a strong electrolyte?

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If aqueous solutions of Na2CO3 and BaCl2 are mixed, which insoluble precipitate is formed?

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A 350-mL sample of 0.276 M HNO3 is partially neutralized by 125 mL of 0.120 M Ca(OH) 2. Find the concentration of nitric acid in the resulting solution.

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

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If aqueous solutions of ammonium sulfide and copper(II) nitrate are mixed, which insoluble precipitate is formed?

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Sodium hydroxide is water soluble.

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If aqueous solutions of Mg(C2H3O2) 2 and LiOH are mixed, which insoluble precipitate is formed?

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Based on the solubility rules, which of these processes will occur when solutions of ZnSO4(aq) and MgCl2(aq) are mixed?

Correct AnswerverifiedShow Answer

Correct Answer
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What volume of a 0.442 M NaOH solution is needed to neutralize 65.0 mL of a 0.296 M solution of HNO₃?

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

Correct Answer
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A 50.0 mL sample of 0.436 M NH₄NO₃ is diluted with water to a total volume of 250.0 mL. What is the ammonium nitrate concentration in the resulting solution?

Correct Answer
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A 0.8838-g sample of an ionic compound containing bromide ions and an unknown metal cation is dissolved in water and treated with an excess of AgNO₃. If 1.573 g of a AgBr precipitate forms, what is the percent by mass of Br in the original compound?

Correct Answer
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Correct Answer
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What is the reducing agent in the following reaction? Mg + NiO₂ + 2H₂O → Mg(OH) ₂ + Ni(OH) ₂

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A(n) is the name given for the substance that causes another substance to undergo oxidation.

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If aqueous solutions of Na₂CO₃ and BaCl₂ are mixed, which insoluble precipitate is formed?

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A 350-mL sample of 0.276 M HNO₃ is partially neutralized by 125 mL of 0.120 M Ca(OH) ₂. Find the concentration of nitric acid in the resulting solution.

Correct Answer
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If aqueous solutions of Mg(C₂H₃O₂) ₂ and LiOH are mixed, which insoluble precipitate is formed?

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Based on the solubility rules, which of these processes will occur when solutions of ZnSO₄(aq) and MgCl₂(aq) are mixed?

Correct Answer
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