Question

explain the process of hasen cleaver method of bleaching powder

Answer 1

When bleaching powder is treated with an excess of a dilute acid, all the chlorine present in it is liberated. The chlorine, produced by the action of a dilute acid on bleaching powder, acts as a bleaching agent (a substance which decolourises coloured substances is called a bleaching agent).

Answer 2

it is process for the preparation of bleaching powder (calcium Chloro hypochlorite).
HasenClever's plant in used in which calcium hydroxide [Ca(OH)2] reacts with chlorine gas [C12] to form bleaching powder and water. Following is the equation for the above mentioned reaction.
Ca(OH)2 + C12 --------》CaOC12 + H20