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Bleaching Powder

Available chl...

Question

Available chlorine is liberated from bleaching powder when it :

A

is heated

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B

reacts with acid

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C

reacts with

H_{2} O

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D

reacts with

C O_{2}

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Solution

The correct options are
B reacts with $H_{2} O$
C reacts with acid
D reacts with $C O_{2}$
Reaction is:
$C a (O C l)_{2} + 4 H C l \to C a C l_{2} + 2 H_{2} O + 2 C l_{2}$
$C a (O C l)_{2} + H_{2} O \to C a (O H)_{2} + C l_{2}$
$C a (O C l)_{2} + C O_{2} \to C a C O_{3} + C l_{2}$

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