Answer to Question #113404 in Chemistry for Rosa

Question

Determine whether or not the reaction is a redox reaction? If it is, state which substance is oxidized, and which is reduced. State how many electrons are transferred in each reaction.

2H20 (l) + 2Cl- (aq)àH2 (g) + Cl2 (g) + 2OH- (aq)

Answer 1

In basic medium, this is a redox reaction. The chlorine is oxidized (loses two electrons), the oxidation reaction is

2Cl^- → Cl₂ + 2e^-

The water molecules are reduced (acquire two electrons), the reduction reaction is

H₂O + 2e^- + H₂O → H₂ + 2OH^-