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ICSE Class 10 Chemistry Question 21 of 22

Solved 2016 Question Paper ICSE Class 10 Chemistry — Question 21

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21
Question

Question 7(b)

State what would you observe when:

(i) Washing Soda Crystals are exposed to the atmosphere.

(ii) The salt ferric chloride is exposed to the atmosphere.

Answer

(i) When crystals of washing soda are exposed to air, it loses its water of crystallisation due to efflorescence.

(ii) When ferric chloride is exposed to the atmosphere, it absorbs moisture from the atmospheric air to become moist and ultimately dissolves in the absorbed water, forming a saturated solution.