Question

Chlorination of calcium hydroxide produces bleaching powder if true enter ‘1’ or false enter ‘0’.

Answer 1

Hint: Bleaching powder is also known as chloride of lime, it can be prepared by reacting calcium hydroxide or slaked lime,\[Ca{\left( {OH} \right)_2}\], with chlorine gas,\[C{l_2}\]. It is used as a strong bleaching agent, as a disinfectant, and in making Javelle water.

Complete step by step answer:
The reaction included in the formation of bleaching powder is as follows:
$\underbrace {{\text{Ca(OH}}{{\text{)}}_{\text{2}}}}_{{\text{calcium hydroxide}}}{\text{ + }}\underbrace {{\text{C}}{{\text{l}}_{\text{2}}}}_{{\text{chlorine}}} \to \underbrace {{\text{CaOC}}{{\text{l}}_{\text{2}}}}_{{\text{calcium oxychloride}}}{\text{ + }}\underbrace {{{\text{H}}_{\text{2}}}{\text{O}}}_{{\text{water}}}$
Calcium hypochlorite is a compound with the formula \[Ca{\left( {ClO} \right)_2}\] ​. When a mixture with lime and calcium chloride, it is marketed as chlorine powder or bleach powder for water treatment and as a bleaching agent.
Calcium hypochlorite is produced industrially by treating lime (\[Ca{\left( {OH} \right)_2}\]) with chlorine gas.
It is commonly used for bleaching dirty clothes in the laundry. It has a vast use in textile industries also. It is used as a bleaching agent for cotton and linen in the textile industries.
It is a strong oxidizing agent which makes it suitable for being used in many chemical industries and chemical plants to synthesize reactions.
It is used as a disinfectant, not for humans but for chemical compounds such as ${H_2}O$ or water. It is used in purifying and disinfecting water in water treatment plants.
Hence in the chemical reaction we saw that calcium oxychloride which is also known as bleaching powder is produced.

Note:
When chlorine reacts with dry slaked lime then calcium oxychloride that is bleaching powder is formed along with water. Bleaching powder is synthesized by the action of chlorine gas (produced from the chlor-alkali process) on dry slaked lime.