Balancing Oxidation-Reduction Equations

Question 1

Based on the oxidation states of the atoms in this reaction, answer the questions.

Revolt · Accepted Answer

: 3; : 1; : 6; : 2; : 6; : 2; : 3; : 6

Question 2

Which element is oxidized?✔ oxygennitrogenpotassium

Revolt · Accepted Answer

A: ✔ oxygen

Question 3

Which pair of half-reactions represents the balanced half-reactions?

Revolt · Accepted Answer

B:

Question 4

Consider this reaction and answer the questions: What is the oxidation number of chlorine in the reactant state?

Revolt · Accepted Answer

: +5; : -2; : +1; : -1; : 0; : +1

Question 5

Use the oxidation states as indicated by the superscript numbers to answer the questions.

Revolt · Accepted Answer

A: ✔ oxygen

Question 6

Given the reaction Fe + O2 Fe2(3+)O3(2-), what happens to the oxidation states of these elements?Fe Fe is reduced from 0 to +3.✔ Fe is oxidized from 0 to +3.Fe is reduced from +3 to +6.Fe is oxidized from +3 to +6.

Revolt · Accepted Answer

B: ✔ Fe is oxidized from 0 to +3.

Question 7

Based on the oxidation states of the atoms in this reaction, answer the questions.

Revolt · Accepted Answer

: 12; : 12; : 12

Question 8

Consider the reaction .Label the half-reactions as oxidation (use “O”) or reduction (use “R”).

Revolt · Accepted Answer

: O; : R

Question 9

Use the half-reactions of the reaction to answer the questions.Reduction half-reaction:Oxidation half-reaction:How many electrons does each gold atom gain?

Revolt · Accepted Answer

: 3; : 1; : 6; : 2; : 6; : 2; : 3; : 6

Question 10

Which element is reduced?oxygen✔ nitrogenpotassium

Revolt · Accepted Answer

B: ✔ nitrogen

Balancing Oxidation-Reduction Equations Answers

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