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Bleaching powder can be prepared by passing _______gas through Ca (OH) 2

 

Option: 1

O2

 


Option: 2

CO2

 


Option: 3

S2

 


Option: 4

Cl2


Answers (1)

As we learn

Action of Cl2 on milk of lime -

Form hypochlorite, a constituent of bleaching powder

- wherein

2Ca(OH)_{2}+2Cl_{2}\rightarrow Ca(OCl)_{2}(Bleaching \ Powder) +\2H_{2}O

 

 

When Cl2 is passed through the solution of Ca (OH) 2 it leads to the formation of bleaching powder.

2Ca (OH) 2 + 2Cl2 ð Ca(OCl)2 + 2H2O

                                    Bleaching powder

 

Posted by

Kshitij

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