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ICSE Class 10 Chemistry Question 13 of 24

Solved 2023 Question Paper ICSE Class 10 Chemistry — Question 5

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5
Question

Question 4(i)

State a relevant reason for the following:

(a) Hydrogen chloride gas cannot be dried over quick lime.

(b) Ammonia gas is not collected over water.

Answer

(a) Quicklime [CaO] is alkaline in nature and it reacts with HCl forming the respective chloride. Hence, it can't be used as a drying agent for Hydrogen chloride gas.

CaO + 2HCl ⟶ CaCl2 + H2O

(b) As ammonia gas is highly soluble in water, therefore, it is not collected over water.