'Milk of lime' reacts with chlorine gas () to form an important commercial compound used for sterilization. What is the fundamental reaction describing this process?

Question

'Milk of lime' reacts with chlorine gas ($Cl_2$) to form an important commercial compound used for sterilization. What is the fundamental reaction describing this process?

Prashant Kotian · Accepted Answer

Correct answer: B. 'Milk of lime' is an aqueous suspension of slaked lime (). When gas is passed through it, bleaching powder is formed. The main active constituent of bleaching powder is Calcium hypochlorite (), and the balanced auto-redox reaction is: .

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