Question

When energy is electrolysed hydrogen gas is liberated at which electrode?

Answer 1

Hydrogen gas is liberated at the anode as sodium hydride exists as sodium cation and hydride anion. Therefore hydrogen gas is liberated at anode by lose of electrons at anode(oxidation).

Answer 2

when sodium hydroxide (Naoh) is electrolysed then hydrogen gas will be liberated at the anode ..

inthe reaction below

NaH = Na+ + H-

H- – 1e- = H

H+H = H2 (which will be liberated )