Which of the property is shown by the cathode electrode during electrolysis?

Question

Question

Answer 1

The correct answer is Reduction occurs.

Concept:

Electrolysis
- Passing of direct electric current in the compound.
- It decomposes ionic compounds into their elements.

Explanation:

At Cathode:
- Reduction occurs at the cathode.
- It acts as a positive terminal.
At Anode:
- Oxidation occurs at the anode.
- It acts as a negative terminal.
Example of electrolysis:
- At Cathode:
  - Cu2+ + 2e- → Cu(s) [E0 = 0.34V]
  - H+(aq) + e- → 1/2 H2(g) [E0 = 0.00V]
- It is a reduction reaction.
- At Anode:
  - Cl- → 1/2 Cl2(g) + e-1 [E0 = +1.36V]
  - 2H2O → O2 + 4H+(aq) + e-1 [E0 = +1.23V]
- It is oxidation reaction.