Question 1

The oxidation number of C in CH₂Cl₂ is ________. Hint: Assign oxidation numbers to hydrogen and chlorine first before determining carbon.

Accepted Answer

The answer of The oxidation number of C in CH₂Cl₂...

Question 2

The oxidation number of Mn in Mn₂O₇ is ________.

Accepted Answer

The answer of The oxidation number of Mn in Mn₂O₇...

Question 3

The oxidation number of N in NO₂^- is ________.

Accepted Answer

The answer of The oxidation number of N in NO₂^-...

Question 4

The oxidation number of P in HPO₄^2- is ________.

Accepted Answer

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Question 5

The oxidation number of N in NO₂ is ________.

Accepted Answer

The answer of The oxidation number of N in NO₂...

Question 6

The oxidation number of S in S₂O₃^2- is ________.

Accepted Answer

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Question 7

Is the following, Cr₂O₇² → Cr³⁺, an oxidation or a reduction half-reaction?

Accepted Answer

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Question 8

Is the following, NO₃ → NO, an oxidation or a reduction half-reaction?

Accepted Answer

The answer of Is the following, NO₃ → NO, an...

Question 9

Is the following, PbO₂ → PbO, an oxidation or a reduction half-reaction?

Accepted Answer

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Question 10

Is the following, C₂O₄² → CO₃², an oxidation or a reduction half-reaction?

Accepted Answer

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Question 11

Which substance in the reaction BrO₃^-(aq)+ 3 Zn(s)+ 6 H⁺(aq)→ Br^-(aq)+ 3 Zn²⁺(aq)+ 3 H₂O(l)is the oxidizing agent?

Accepted Answer

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Question 12

Which substance in the reaction 5 H₂O(l)+ 4 Cl₂(g)+S₂O₃^2-(aq)→ 2 SO₄^2-(aq)+ 8 Cl^-(aq)+ 10 H⁺(aq)is the reducing agent?

Accepted Answer

The answer of Which substance in the reaction 5 H₂O(l)+...

Question 13

Identify the reducing agent in the chemical reaction Cd + NiO₂ + 2H₂O → Cd(OH)₂ + Ni(OH)₂.

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Question 14

When H₂O₂ behaves as a reducing agent, the most likely product formed from it is ________. Hint: Write out an example equation with H₂O₂ being oxidized to see the result.

Accepted Answer

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Question 15

When concentrated nitric acid behaves as an oxidizing agent, how does the oxidation number of N change? Hint: An oxidizing agent is reduced.

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Question 16

When the equation, Al(s)+ NO₃^-(aq)→ NO(g)+ Al³⁺(aq)is balanced for an acidic solution, the Al/NO₃^- ratio is ________. Hint: H⁺^{are present in an acidic solution.}

Accepted Answer

The answer of When the equation, Al(s)+ NO₃^-(aq)→ NO(g)+ Al³⁺(aq)is...

Question 17

When the equation, Al(s)+ NO₃^-(aq)→ NO(g)+ Al³⁺(aq)is balanced for an acidic solution, the sum of ALL the coefficients is ________. Hint: Do not neglect to include electrons when balancing redox reactions.

Accepted Answer

The answer of When the equation, Al(s)+ NO₃^-(aq)→ NO(g)+ Al³⁺(aq)is...

Question 18

When the equation, Zn(s)+ NO₃^-(aq)→ NH₄⁺(aq)+ Zn²⁺(aq)is balanced for an acidic solution, the Zn/NO₃^- ratio is ________. Hint: Do not neglect to include electrons when balancing redox reactions.

Accepted Answer

The answer of When the equation, Zn(s)+ NO₃^-(aq)→ NH₄⁺(aq)+ Zn²⁺(aq)is...

Question 19

When the equation, Zn(s)+ NO₃^-(aq)→ NH₄⁺(aq)+ Zn²⁺(aq)is balanced for an acidic solution, the sum of ALL the coefficients is ________. Hint: Do not neglect to include electrons when balancing redox reactions.

Accepted Answer

The answer of When the equation, Zn(s)+ NO₃^-(aq)→ NH₄⁺(aq)+ Zn²⁺(aq)is...

Question 20

Balance the redox reaction below in acidic solution.PbO₂(s)+ I^-(aq)→ Pb²⁺(aq)+ I₂(s)When balanced, what is the sum of all the coefficients? Hint: Do not neglect to include electrons when balancing redox reactions.

Accepted Answer

The answer of Balance the redox reaction below in acidic...

Quiz 6: Oxidation-Reduction Reactions

The oxidation number of C in CH2Cl2 is ________. Hint: Assign oxidation numbers to hydrogen and chlorine first before determining carbon.

The oxidation number of Mn in Mn2O7 is ________.

The oxidation number of N in NO2- is ________.

The oxidation number of P in HPO42- is ________.

The oxidation number of N in NO2 is ________.

The oxidation number of S in S2O32- is ________.

Is the following, Cr2O72 → Cr3+, an oxidation or a reduction half-reaction?

Is the following, NO3 → NO, an oxidation or a reduction half-reaction?

Is the following, PbO2 → PbO, an oxidation or a reduction half-reaction?

Is the following, C2O42 → CO32, an oxidation or a reduction half-reaction?

Which substance in the reaction BrO3-(aq)+ 3 Zn(s)+ 6 H+(aq)→ Br-(aq)+ 3 Zn2+(aq)+ 3 H2O(l)is the oxidizing agent?

Which substance in the reaction 5 H2O(l)+ 4 Cl2(g)+ S2O32-(aq)→ 2 SO42-(aq)+ 8 Cl-(aq)+ 10 H+(aq)is the reducing agent?

Identify the reducing agent in the chemical reaction Cd + NiO2 + 2H2O → Cd(OH)2 + Ni(OH)2.

When H2O2 behaves as a reducing agent, the most likely product formed from it is ________. Hint: Write out an example equation with H2O2 being oxidized to see the result.