Question 1

Which balanced chemical equation could represent the following result of a precipitation reaction? 3PO4(aq) + 3Cr2(SO4) 3(aq) → CrPO4(s) + 6KCl(aq)  B) MgSO4(aq) + 2AgNO3(aq) → Ag2SO4(s) + Mg(NO3) 2(aq)  C) MgCl2(aq) + 2AgC2H3O2(aq) → 2AgCl(s) + Mg(C2H3O2) 2(aq)  D) K2CrO4(aq) + 2AgNO3(aq) → Ag2CrO4(s) + 2KNO3(aq)  E) K2S(aq) + Pb(NO3) 2(aq) → PbS(s) + 2KNO3(aq) " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  2K3PO4(aq) + 3Cr2(SO4) 3(aq) → CrPO4(s) + 6KCl(aq) 
B)  MgSO4(aq) + 2AgNO3(aq) → Ag2SO4(s) + Mg(NO3) 2(aq) 
C)  MgCl2(aq) + 2AgC2H3O2(aq) → 2AgCl(s) + Mg(C2H3O2) 2(aq) 
D)  K2CrO4(aq) + 2AgNO3(aq) → Ag2CrO4(s) + 2KNO3(aq) 
E)  K2S(aq) + Pb(NO3) 2(aq) → PbS(s) + 2KNO3(aq) F) D) and E)
G) C) and D)

Question 2

Based on the solubility rules,which one of these compounds is insoluble in water?

Accepted Answer

A)  Na2SO4
B)  BaSO4
C)  CuSO4
D)  MgSO4
E)  Rb2SO4F) A) and B)
G) None of the above

Question 3

The substance HClO4 is considered to be

Accepted Answer

A)  a weak acid.
B)  a weak base.
C)  a strong acid.
D)  a strong base.
E)  neither acidic nor basic.F) B) and C)
G) None of the above

Question 4

What is the net ionic equation if sodium sulfate is mixed with barium hydroxide?

Accepted Answer

A)  2Na+(aq) + SO42-(aq) → Na2SO4(s) 
B)  Na+(aq) + OH-(aq) → NaOH(s) 
C)  2Ba+(aq) + SO42- (aq) → Ba2SO4(s) 
D)  Ba2+(aq) + SO42- (aq) → BaSO4(s) 
E)  Ba2+(aq) + 2OH-(aq) → Ba(OH) 2(s) F) A) and D)
G) A) and C)

Question 5

A(n)______________ is a substance that has a distinctly different color in acidic and basic media and is used in acid-base titrations to find the endpoint of the titration.

Accepted Answer

The answer of A(n)______________ is a substance that has a...

Question 6

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 D)
G) C) and E)

Question 7

Select the compound in which sulfur has its highest possible oxidation number.

Accepted Answer

A)  H2S
B)  SO2
C)  SCl2
D)  H2SO3
E)  Na2SO4F) A) and B)
G) All of the above

Question 8

Which of the following is a strong acid?

Accepted Answer

A)  H3PO4
B)  HNO3
C)  HF
D)  CH3COOH
E)  H2OF) A) and E)
G) A) and D)

Question 9

Which of these compounds is a weak electrolyte?

Accepted Answer

A)  HCl
B)  NH3
C)  C6H12O6(glucose) 
D)  N2
E)  KClF) C) and D)
G) B) and E)

Question 10

Which chemical equation describes a hydrogen displacement reaction?

Accepted Answer

A)  2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l) 
B)  2KBr(aq) + Cl2(g) → 2KCl(aq) + Br2(l) 
C)  N2(g) + 3H2(g) → 2NH3(g) 
D)  CaBr2(aq) + H2SO4(aq) → CaSO4(s) + 2HBr(g) 
E)  2Al(s) + 3H2SO4(aq) → Al2(SO4) 3(aq) + 3H2(g) F) A) and B)
G) B) and E)

Question 11

During a titration,it is found that 53.5 mL of a solution of NaOH is needed to neutralize a solution that contains 1.86 g of HCl.What is the concentration of the NaOH solution?

Accepted Answer

A)  0.051 M
B)  0.686 M
C)  1.05 M
D)  0.035 M
E)  0.953 MF) B) and E)
G) A) and E)

Question 12

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

Accepted Answer

A) True 
 B)False

Question 13

Which one of the following is a strong acid?

Accepted Answer

A)  CH3COOH
B)  H2SO3
C)  NH3
D)  H3PO4
E)  HClO3F) B) and E)
G) A) and B)

Question 14

Which chemical equation describes an acid-base neutralization reaction?

Accepted Answer

A)  2Al(s) + 3H2SO4 (aq) → Al2 (SO4) 3 (aq) + 3H2(g) 
B)  2SO2(g) + 2H2O(l) + O2(g) → 2H2SO4(aq) 
C)  LiOH(aq) + HNO3(aq) → LiNO3(aq) + H2O(l) 
D)  2KBr(aq) + Cl2(g) → 2KCl(aq) + Br2(l) 
E)  CaBr2(aq) + H2SO4(aq) → CaSO4(s) + 2HBr(g) F) B) and E)
G) C) and E)

Question 15

Which chemical equation describes a combustion reaction?

Accepted Answer

A)  2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(l) 
B)  LiOH(aq) + HNO3(aq) → LiNO3(aq) + H2O(l) 
C)  N2(g) + 3H2(g) → 2NH3(g) 
D)  2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g) 
E)  2Al(s) + 3H2SO4(aq) → Al2(SO4) 3(aq) + 3H2(g) F) C) and E)
G) B) and C)

Question 16

If aqueous solutions of Ba(OH) 2 and HNO3 are mixed,what products are formed?

Accepted Answer

A)  BaN2(s) + H2O(l) 
B)  Ba(NO3) 2(aq) + H2O(l) 
C)  Ba(s) + H2(g) + NO2(g) 
D)  Ba2O(s) + NO2(g) + H2O(l) 
E)  Ba3N2(s) + H2O(l) F) B) and E)
G) B) and C)

Question 17

Which is a correct description of the following reaction? H2SO4 + Cd(OH) 2 → 2H2O + CdSO4

Accepted Answer

A)  This reaction is an acid-base reaction.
B)  In this reaction,hydrogen is oxidized.
C)  In this reaction,sulfur is oxidized.
D)  In this reaction,cadmium is oxidized.
E)  In this reaction,oxygen is oxidized.F) B) and E)
G) B) and D)

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 D)

Question 19

________________ ____________ is a highly accurate analytical technique which is quantitative and based on the measurement of mass.

Accepted Answer

Gravimetri...

Question 20

Which is defined as the maximum amount of solute that will dissolve in a given quantity of solvent at a specific temperature?

Accepted Answer

A)  precipitation
B)  combustion
C)  solubility
D)  super saturation
E)  dilutionF) B) and C)
G) A) and E)

Exam 4: Reactions in Aqueous Solutions

Which chemical equation describes an acid-base neutralization reaction?

Correct AnswerverifiedShow Answer

________________ ____________ is a highly accurate analytical technique which is quantitative and based on the measurement of mass.

Correct AnswerverifiedGravimetri...View AnswerShow Answer

The substance HClO4 is considered to be

Correct AnswerverifiedShow Answer

Based on the solubility rules,which one of these compounds is insoluble in water?

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Which of the following is a strong acid?

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Which chemical equation describes a hydrogen displacement reaction?

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Which is a correct description of the following reaction? H2SO4 + Cd(OH) 2 → 2H2O + CdSO4

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Which one of the following is a strong acid?

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During a titration,it is found that 53.5 mL of a solution of NaOH is needed to neutralize a solution that contains 1.86 g of HCl.What is the concentration of the NaOH solution?

Correct AnswerverifiedShow Answer

An electrolyte is a substance that dissolves in water to yield a solution that conducts electricity.

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Which balanced chemical equation could represent the following result of a precipitation reaction?

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Which chemical equation describes a combustion reaction?

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Which accurately characterizes all nonelectrolyte solutions?

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Which is defined as the maximum amount of solute that will dissolve in a given quantity of solvent at a specific temperature?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the net ionic equation if sodium sulfate is mixed with barium hydroxide?

Correct AnswerverifiedShow Answer

Which of these compounds is a weak electrolyte?

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Select the compound in which sulfur has its highest possible oxidation number.

Correct AnswerverifiedShow Answer

If aqueous solutions of Ba(OH) 2 and HNO3 are mixed,what products are formed?

Correct AnswerverifiedShow Answer

A(n)______________ is a substance that has a distinctly different color in acidic and basic media and is used in acid-base titrations to find the endpoint of the titration.

Correct AnswerverifiedShow Answer

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____ is a highly accurate analytical technique which is quantitative and based on the measurement of mass.

Correct Answer
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Gravimetri...
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The substance HClO₄ is considered to be

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Which is a correct description of the following reaction? H₂SO₄ + Cd(OH) ₂ → 2H₂O + CdSO₄

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If aqueous solutions of Ba(OH) ₂ and HNO₃ are mixed,what products are formed?

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