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Question

Name the gas evolved when the following mixtures are heated :
(i) Calcium hydroxide and Ammonium Chloride.
(ii) Sodium Nitrite and Ammonium Chloride.

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Solution

(i) Alkalis reacts with ammonium salts on heating to liberate ammonia gas.
Ca(OH)2+2NH4ClCaCl2+2NH3+H2O
(ii) When sodium nitrite reats with ammonium chloride nitrogen gas is liberated.
NaNO2+NH4ClNaCl+N2+2H2O

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