ICSE Class 10 Chemistry Question 33 of 42

Practical Chemistry — Question 34

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Question

Question 1(2018)

State one relevant observation - Barium chloride solution is slowly added to sodium sulphate solution.

Answer

A white ppt. is obtained which is insoluble in dil. HCl or dil. HNO3

Na2SO4 + BaCl2 ⟶ BaSO4 ↓ [white ppt.] + 2NaCl

BaSO4 is insoluble in dil. hydrochloric acid.