Question

# A solution of a substance 'X' is used for white washing.(i) Name the substance 'X' and write its formula(ii) Write the reaction of the substance 'X' named in (i) above with water.

Solution

## Solution:-(i) The name of the substance used for whitewashing is calcium oxide and its formula is $$CaO$$.(ii) It's reaction with water is-$$CaO + \underset{\text{water}}{{H}_{2}O} \longrightarrow Ca{\left( OH \right)}_{2} + heat$$Chemistry

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