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kellimcollier8294
21.08.2019 •
Chemistry
The best explanation for the dissolution of zns in dilute hcl is that a. the sulfide ion concentration is decreased by the formation of h2s. b. the zinc ion is amphoteric. c. the zinc ion concentration is decreased by the formation of a chloro complex. d. the sulfide ion concentration is decreased by oxidation to sulfur. e. the solubility product of zncl2 is less than that of zns.
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Ответ:
Correct option is (a).
Explanation:
Solubility equilibrium of ZnS is represented as-
Therefore addition of HCl in ZnS results formation of
. Thus
is removed as
.
So, ZnS tends to be more soluble with addition of dilute HCl to keep constant solubility product.
Ответ:
this equals: 756