Oxidation-Reduction

Question 1

Which identifies an oxidation-reduction reaction?

Revolt · Accepted Answer

a reaction in which oxidation numbers change

Question 2

Which of the following is an oxidation-reduction reaction?

Revolt · Accepted Answer

Fe2O3 + 3CO 2Fe + 3CO2

Question 3

best

Revolt · Accepted Answer

H2

Question 4

Which type of reaction occurs in the following?2HgO(s) 2Hg(l) + O2(g)

Revolt · Accepted Answer

a decomposition reaction in which a metal is reduced

Question 5

best

Revolt · Accepted Answer

Chlorine (Cl) is the oxidizing agent because it gains an electron.

Question 6

Which of the following is an oxidation-reduction reaction?

Revolt · Accepted Answer

ZnS(s) + 2O2(g) ZnSO4(s)

Question 7

What is the oxidation number for S in the compound SO3? (Recall that O has an oxidation number of –2.)

Revolt · Accepted Answer

+6

Question 8

Which of the following is true about a redox reaction?

Revolt · Accepted Answer

In a redox reaction, the reducing agent loses electrons.

Question 9

Consider the following reaction.CO2(g) + H2(g) CO(g) + H2O(l) What is being oxidized?

Revolt · Accepted Answer

hydrogen

Question 10

Which describes the oxidizing agent in a chemical reaction?

Revolt · Accepted Answer

the substance that is reduced because it gains electrons

Oxidation-Reduction Answers