Which of the following sulfides is completely | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) In qualitative analysis,the precipitation of group $II$ sulfides depends on the concentration of $H_2S$ and the acidity of the solution. $HgS$ (me

Vedclass · Accepted Answer

$HgS$

Vedclass · Answer

(A) In qualitative analysis,the precipitation of group $II$ sulfides depends on the concentration of $H_2S$ and the acidity of the solution. $HgS$ (mercuric sulfide) has a very low solubility product $(K_{sp})$,which makes it the least soluble among the given sulfides. When an acidic solution containing $Hg^{2+}$ ions is treated with $H_2S$,$HgS$ precipitates. Upon dilution,the concentration of $H^+$ ions decreases,but $HgS$ remains precipitated due to its extremely low $K_{sp}$ value,ensuring complete precipitation compared to others like $PbS$,$CdS$,or $CuS$ which may redissolve or require specific conditions.

Which of the following sulfides is completely precipitated upon dilution of its acidic solution?

Similar Questions

$A$ metal nitrate reacts with $KI$ to give a black precipitate which on addition of excess of $KI$ converts into an orange-colored solution. The cation of the metal nitrate is

Which sulphide is soluble in $(NH_4)_2CO_3$?

When $MgSO_4$ reacts with $NH_4OH$ and $Na_2HPO_4$,it forms a white crystalline substance. What is the formula of that substance?

Addition of $SnCl_2$ to $HgCl_2$ gives a precipitate of which color?

Precipitate of group $IV$ cations takes place when $H_2S$ is

Vedclass Test Series

Exam Paper Generator

Online Exam Module