Oxidizing and Reducing Agents

Question 1

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 2

Which describes the oxidizing agent in a chemical reaction?

Revolt · Accepted Answer

the substance that is reduced because it gains electrons

Question 3

Given the reaction below, which is being oxidized?Mg + Cl2 Mg2+ + 2Cl–

Revolt · Accepted Answer

Mg

Question 4

Which best describes the oxidizing agent in this reaction? Cl2(aq) + 2Br–(aq) 2Cl–(aq) + Br2(aq)

Revolt · Accepted Answer

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

Question 5

The presence of which reactant is the best indicator of an oxidation-reduction reaction?

Revolt · Accepted Answer

H2

Question 6

Which of the following is true about a redox reaction?

Revolt · Accepted Answer

In a redox reaction, the reducing agent loses electrons.

Question 7

Which of the following is a simple definition of oxidation?

Revolt · Accepted Answer

the loss of electrons

Question 8

Which of the following is an oxidation-reduction reaction?

Revolt · Accepted Answer

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

Question 9

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

Revolt · Accepted Answer

hydrogen

Oxidizing and Reducing Agents Answers