Question

Dilute aqueous solution of potassium fluoride is electrolysed the products at the anode and cathode are

Answer 1

Answer:

It means the charge is taken away from the potassium and chloride ions at the electrodes.

Explanation:

The solution may be represented by K+(aq)andCl−(aq)

At the positive electrode (anode) the following happens:

Cl−→Cl+e−

2Cl→Cl2(g)

At the other side (cathode):

K++e−→K

K+H2O→K++OH−+H

2H→H2(g)

So the net result is that at the anode chlorine gas is released, at the cathode hydrogen gas is released, and a strong solution of potassium hydroxide is left in the container: