Question 1

Identify the oxidizing agent in the chemical reaction 2MnO4− + 5H2SO3→ 2Mn2+ + 5SO42− + 4H+ + 3H2O.

Accepted Answer

A)  MnO4−
B)  H2SO3
C)  Mn2+
D)  SO42−
E)  H+F) All of the above
G) A) and D)

Question 2

What is the coefficient of O2 when the following equation is properly balanced with the smallest set of whole numbers? ___ CH3OH + ___ O2 → ___ CO2 + ___ H2O

Accepted Answer

A)  1
B)  2
C)  3
D)  7
E)  None of these answers is correct.F) A) and B)
G) All of the above

Question 3

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 C)
G) A) and B)

Question 4

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 D)
G) B) and C)

Question 5

When a chemical equation is balanced, it will have a set of whole number coefficients that cannot be reduced to smaller whole numbers.What is the coefficient for O2 when the following combustion reaction of a hydrocarbon is balanced? ___ C7H14 + ___ O2 → ___ CO2 + ___ H2O

Accepted Answer

A)  42
B)  21
C)  11
D)  10
E)  None of these answers is correct.F) B) and E)
G) A) and C)

Exam 10: Chemical Reactions and Chemical Equations

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

Correct Answer
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Identify the oxidizing agent in the chemical reaction 2MnO₄⁻ + 5H₂SO₃→ 2Mn²⁺ + 5SO₄²⁻ + 4H⁺ + 3H₂O.

Correct Answer
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When a chemical equation is balanced, it will have a set of whole number coefficients that cannot be reduced to smaller whole numbers.What is the coefficient for O₂ when the following combustion reaction of a hydrocarbon is balanced? _ C₇H₁₄ + _ O₂ → _ CO₂ + _ H₂O

Correct Answer
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What is the coefficient of O₂ when the following equation is properly balanced with the smallest set of whole numbers? _ CH₃OH + _ O₂ → _ CO₂ + _ H₂O

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

Correct Answer
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Exam 10: Chemical Reactions and Chemical Equations

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

Correct AnswerverifiedShow Answer

Identify the oxidizing agent in the chemical reaction 2MnO4− + 5H2SO3→ 2Mn2+ + 5SO42− + 4H+ + 3H2O.

Correct AnswerverifiedShow Answer

When a chemical equation is balanced, it will have a set of whole number coefficients that cannot be reduced to smaller whole numbers.What is the coefficient for O2 when the following combustion reaction of a hydrocarbon is balanced? ___ C7H14 + ___ O2 → ___ CO2 + ___ H2O

Correct AnswerverifiedShow Answer

What is the coefficient of O2 when the following equation is properly balanced with the smallest set of whole numbers? ___ CH3OH + ___ O2 → ___ CO2 + ___ H2O

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answer
verified

Identify the oxidizing agent in the chemical reaction 2MnO₄⁻ + 5H₂SO₃→ 2Mn²⁺ + 5SO₄²⁻ + 4H⁺ + 3H₂O.

Correct Answer
verified

When a chemical equation is balanced, it will have a set of whole number coefficients that cannot be reduced to smaller whole numbers.What is the coefficient for O₂ when the following combustion reaction of a hydrocarbon is balanced? _ C₇H₁₄ + _ O₂ → _ CO₂ + _ H₂O

Correct Answer
verified

What is the coefficient of O₂ when the following equation is properly balanced with the smallest set of whole numbers? _ CH₃OH + _ O₂ → _ CO₂ + _ H₂O

Correct Answer
verified

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

Correct Answer
verified