Use the half reaction method to balance each of the following oxidation-reduction reactions. Identify the oxidizing...

Use the half reaction method to balance each of the following oxidation-reduction reactions. Identify the oxidizing agent and the reducing agent.

A) Cu(s) + Ag+(aq) ---> Ag(s) + Cu2+

B) Al(s) + I2(s) ---> AlI3(s)

C) Pb(s) + Fe3+(aq) ----> Pb2+(aq) + Fe(s)

Solutions

Expert Solution

A) Cu(s) + Ag+(aq) ---> Ag(s) + Cu2+

Cu oxidation number increases from 0 to +2 . So it is oxidation reaction.A substance which participate in oxidation reaction is called reducing agent. Cu is reducing agent

Ag oxidation number decreases from +1 to 0. So it is reduction reaction.A substance which participate in reduction reaction is called oxidicing agent.

B) Al(s) + I2(s) ---> AlI3(s)

Al oxidation number increases from 0 to +3 . So it is oxidation reaction.A substance which participate in oxidation reaction is called reducing agent. Al is reducing agent.

I2 oxidation number decreases from 0 to -1. So it is reduction reaction.A substance which participate in reduction reaction is called oxidicing agent. I2 is oxidicing agent.

C) Pb(s) + Fe3+(aq) ----> Pb2+(aq) + Fe(s)

Pb oxidation number increases from 0 to +2. So it is oxidation reaction.A substance which participate in oxidation reaction is called reducing agent. Pb is reducing agent

Fe oxidation number decreases from +3 to 0. So it is reduction reaction.A substance which participate in reduction reaction is called oxidicing agent. Fe is oxidicing agent.

queen_honey_blossom answered 1 year ago

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