why hgo is soluble in hcl but not hgs is insoluble in hcl?
Answers
Answer:
Mercury is known to have an exceptional affinity (liking) for sulphur. In fact, if somebody happens to swallow mercury or mercury compounds, one of the treatments available is to make the patient drink the beaten yellow of eggs, which contains a lot of sulphur!
Mercury is known to have an exceptional affinity (liking) for sulphur. In fact, if somebody happens to swallow mercury or mercury compounds, one of the treatments available is to make the patient drink the beaten yellow of eggs, which contains a lot of sulphur!Another way of answering why HgS does not dissolve is to say that it has a very low solubility product (if you understand what that is).
Mercury is known to have an exceptional affinity (liking) for sulphur. In fact, if somebody happens to swallow mercury or mercury compounds, one of the treatments available is to make the patient drink the beaten yellow of eggs, which contains a lot of sulphur!Another way of answering why HgS does not dissolve is to say that it has a very low solubility product (if you understand what that is).Hg(OH)2 is a weak base and it reacts with acids. For example, with HCl, it gives the salt mercuric chloride, which dissolves in water.
Mercury is known to have an exceptional affinity (liking) for sulphur. In fact, if somebody happens to swallow mercury or mercury compounds, one of the treatments available is to make the patient drink the beaten yellow of eggs, which contains a lot of sulphur!Another way of answering why HgS does not dissolve is to say that it has a very low solubility product (if you understand what that is).Hg(OH)2 is a weak base and it reacts with acids. For example, with HCl, it gives the salt mercuric chloride, which dissolves in water.Hg(OH)2 + 2 HCl —→ HgCl2 + 2 H2O
Answer:
The solubility of many compounds depends strongly on the pH of the solution. For example, the anion in many sparingly soluble salts is the conjugate base of a weak acid that may become protonated in solution. In addition, the solubility of simple compounds of strong bases like oxides and sulfides, is dependent on pH.
In case of HgS, the ionic product exceeds the solubility product and hence it gets precipitated. But Hg( OH)2 is soluble in HCl according to the following reaction :
Hg( OH)2 + 2HCl = HgCl2 +2 H2O
HgS is insoluble due to common ion effect.
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