Answer to Question #172407 in Organic Chemistry for Jeremy

Question

1.Mg(s) + Fe2+ (aq) + SO42- (aq) = Fe(s) + Mg2+ (aq)+ SO42- (aq) In the reaction represented by thechemical equation below identify which substance loses electrons and which substance gains electrons.

a) Mg gains electrons and Fe2+ loses electrons.

b) Mg loses electrons and Fe2+ gains electrons.

c) Mg2+ gains electrons and Fe loses electrons.

d) Mg2+ loses electrons and Fe gains electrons.

2. In the reaction above which substance is oxidized and which one is reduced.

a) Mg is reduced and Fe2+ is oxidized.

b) Mg2+ is oxidized and Fe2+ is reduced.

c) Mg is oxidized and Fe2+ is reduced.

d) Mg2+ is reduced and Fe is oxidized.

3. In the reaction above which substance is the reducing agent?

a) SO42-

b) Mg

c) Fe2+

d) Fe

Answer 1

1. In this reaction Mg changes to Mg²⁺ ,so It loses electrons

Fe²⁺ changes to Fe its means it is gaining electron.

so,option b is correct

2.

Since Mg is losing electron so it is oxidised and Fe²⁺ is reduced.

So,option b is correct.

3.

Since Mg is oxidised so it is reducing agent.So,option b correct.