Question

When electric current is passed through an ionic hydride in the molten state :

• A. Hydrogen is liberated at the anode.
• B. Hydrogen is liberated at the cathode.
• C. No reaction takes place.
• D. Hydride ion migrates towards cathode.

Answer 1

Answer: (A)

Hydrogen is liberated at the anode.

Answer 2

Hydrogen is liberated at anode 2H– $\longrightarrow$H2(g) + 2e–