Oxidation-Reduction

Question 1

Which of the following is a simple definition of oxidation?

Revolt · Accepted Answer

the loss of electrons

Question 2

In the redox reaction below, which is the reducing agent?MnO2(s) + 4H+(aq) + 2Cl–(aq) Mn2+(aq) + 2H2O(l) + Cl2(g)

Revolt · Accepted Answer

CI–

Question 3

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

Revolt · Accepted Answer

CI2

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

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

Revolt · Accepted Answer

hydrogen

Question 6

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

Revolt · Accepted Answer

H2

Question 7

Which of the following is an oxidation-reduction reaction?

Revolt · Accepted Answer

Fe2O3 + 3CO 2Fe + 3CO2

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

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

Revolt · Accepted Answer

Mg

Question 10

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

Revolt · Accepted Answer

+6

Oxidation-Reduction Answers