Q.

Solution of ZnS in dil. HCl when treated NaOH solution a white Precipitate is formed which dissolves in excess of NaOH due to formation of

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a

Na2ZnO2

b

ZnCl2

c

ZnOHCl

d

ZnOH2

answer is A.

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Detailed Solution

ZnS+2HCl→ZnCl2+H2SZnCl2+2NaOH→Zn(OH)2+2H2OZn(OH)2+2NaOH→Na2ZnO2+2H2O
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Solution of ZnS in dil. HCl when treated NaOH solution a white Precipitate is formed which dissolves in excess of NaOH due to formation of