Chemistry
State one observation in the following cases:
(a) Sodium chloride solution is added to a solution of lead nitrate.
(b) Barium chloride solution is added to a solution of Zinc sulphate.
Analytical Chemistry
ICSE Sp 2024
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Answer
(a) When sodium chloride is added to a solution of lead nitrate, an insoluble white precipitate of lead chloride is formed.
2NaCl + Pb(NO3)2 ⟶ 2NaNO3 + PbCl2 ↓
(b) When barium chloride solution is added to a solution of Zinc sulphate, white ppt. of barium sulphate is obtained which is insoluble in dil. HCl or nitric acid.
ZnSO4 + BaCl2 ⟶ BaSO4 ↓ [white ppt.] + ZnCl2
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