Home Chemistry Chemical Analysis Mix Three separate samples of a solution of a si…
Chemistry Chemical Analysis Mix Single Correct MCQ
Published on: August 12, 2026

Three separate samples of a solution of a single salt gave these results. One formed a white precipitate with excess ammonia solution, one formed a white precipitate with dilute NaCl solution and one formed a black precipitate with H 2 S. The salt could be

A
AgNO 3
B
Pb(NO 3 ) 2
C
Hg(NO 3 ) 2
D
Mn(NO 3 ) 2

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Text Solution

Verified by Experts
The correct answer is:
B

Pb(NO 3 ) 2 + 2NH 4 OH — → Pb(OH) 2 ↓ (white) + 2NH 4 NO 3

Pb(NO 3 ) 2 + 2NaCl — → PbCl 2 ↓ (white) + 2NaNO 3

Pb(NO 3 ) 2 + H 2 S — → PbS ↓ (black) + 2NaNO 3

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