The best explanation for the dissolution of ZnS in dilute HCl is that A)the zinc ion is amphoteric. B)the sulfide ion concentration is decreased by the formation of H₂S. C)the solubility product of ZnCl₂ is less than that of ZnS. D)the zinc ion concentration is decreased by the formation of a chloro complex. E)the sulfide ion concentration is decreased by oxidation to sulfur.

Question

Quizplus · Accepted Answer

The dissolution of ZnS in dilute HCl can be explained by the decrease in sulfide ion concentration due to the formation of H2S gas. This shifts the equilibrium to dissolve more ZnS to replace the removed sulfide ions.

The Best Explanation for the Dissolution of ZnS in Dilute