Question

what happen when (A) bleaching powder is kept open in air ( B) chlorine gas is passed through slaked lime

Answer 1

(A)bleaching powder reacts with atmosphere to give calcium carbonate and chlorine .
(B)when chlorine gas is passed through slaked lime it produces calcium hypochlorite .
hope this helps you...

Answer 2

Answer and Explanation:

(A) bleaching powder is kept open in air:

It absorbs carbon dioxide and produces calcium carbonate and liberate chlorine which is used for disinfection.

The chemical equation is represented as:

$CaOCl_2+CO_2\rightarrow CaCO_3+Cl_2$

B) chlorine gas is passed through slaked lime

When chlorine gas is a passed through slaked lime, it produces bleaching powder and water.

The chemical equation is represented as:

$Cl_2+Ca(OH)_2\rightarrow CaOCl_2+H_2O$