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 dil. HCl solution and one formed a black precipitate with H2 S. The salt could be

Question

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 dil. HCl solution and one formed a black precipitate with H2 S. The salt could be (A) AgNO3 (B) Pb(NO3)2 (C) Hg(NO3)2 (D) MnSO4

Tardigrade Admin · Accepted Answer

The salt could be Pb ( NO 3)2 It formed a white precipitate with excess ammonia solution: Pb ( NO 3)2+2 NH 4 OH arrow Pb ( OH )2 downarrow (white ppt) +2 NH 4 NO 3 It formed a white precipitate with dil. NaCl solution: Pb ( NO 3)2+2 NaCl arrow PbCl 2 downarrow (white ppt) +2 NaNO 3 It formed a black precipitate with H 2 S: Pb ( NO 3)2+ H 2 S arrow PbS downarrow (black ppt) +2 HNO 3

Q. 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 dil. $H Cl$ solution and one formed a black precipitate with $H_{2} S$ . The salt could be

$A g N O_{3}$

$P b (N O_{3})_{2}$

$H g (N O_{3})_{2}$

$M n S O_{4}$

Q. 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 dil. HCl solution and one formed a black precipitate with H2​S. The salt could be

AgNO3​

Pb(NO3​)2​

Hg(NO3​)2​

MnSO4​

Q. 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 dil. $H Cl$ solution and one formed a black precipitate with $H_{2} S$ . The salt could be

$A g N O_{3}$

$P b (N O_{3})_{2}$

$H g (N O_{3})_{2}$

$M n S O_{4}$