Question

Reactions that take place at cathode and anode at castner kellner process

Answer 1

The reaction at anode (A) is:

Cl− →1/2 Cl2 + e−

Amalgam sodium hydride The chlorine gas that results vents at the top of the outside cells where it is collected as a byproduct of the process. The reaction at the mercury cathode in the outer cells is

Na+ + e− → Na (amalgam)

The sodium metal formed by this reaction dissolves in the mercury to form an amalgam. 

Answer 2

Answer:

The Castner–Kellner process is a method of electrolysis on an aqueous alkali chloride solution (usually sodium chloride solution) to produce the corresponding alkali hydroxide, invented by American Hamilton Castner and Austrian Karl Kellner in the 1890s.