Oxidation-Reduction

Question 1

What are the oxidation numbers of the atoms in this reaction?Check all that apply.Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

Revolt · Accepted Answer

0 for Mg(s) and H in H2; +1 for H in HCl; -1 for Cl in HCl; +2 for Mg in MgCl2

Question 2

The loss of electrons is called

Revolt · Accepted Answer

oxidation.

Question 3

F + e− → F−F− is

Revolt · Accepted Answer

reduced.

Question 4

2l− → l2 + 2e−l− is

Revolt · Accepted Answer

oxidized.

Question 5

2H+ + 2e− → H2H+ is

Revolt · Accepted Answer

reduced.

Question 6

Use the drop-down menus to complete the sentences. The gain of electrons is called

Revolt · Accepted Answer

reduction.

Question 7

Cu2+ + e− → Cu+Cu2+ is

Revolt · Accepted Answer

reduced.

Question 8

Question 8

Revolt · Accepted Answer

Zinc is reduced.; The oxidation number of chlorine does not change.; Aluminum is oxidized.

Question 9

Which reactions are oxidation-reduction reactions? Check all that apply.

Revolt · Accepted Answer

2C3H6(g) + 9O2(g) → 6CO2(g) + 6H2O(g); Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)

Question 10

Fe → Fe3+ + 3e−Fe is

Revolt · Accepted Answer

oxidized.

Oxidation-Reduction Answers