{\H}_2 {\S} is passed into one drn { }^3 of a solution containing 0.1 mole of {\Zn}^{2+} and 0.01 mole of {\Cu}^{2+} till the sulphide ion concentration reaches 8.1 \times 10^{-19} moles. Which one of the following statements is true? [ K_{s p} of Z n S and CuS are 3 \times 10^{-22} and 8 \times 10^{-36} respectively]

Correct Answer is : Both CuS and ZnS precipitate

Both {\CuS} and {\ZnS} precipitate

KCET 2011 Chemistry Solved Paper

Question : 38 of 60

Marks: +1, -0

H2S is passed into one drn ‌3 of a solution containing 0.1 mole of Zn2+ and 0.01 mole of Cu2+ till the sulphide ion concentration reaches 8.1×10−19 moles. Which one of the following statements is true?
[ Ksp of ZnS and CuS are 3×10−22 and 8×10−36 respectively]

Only ZnS precipitates
Both CuS and ZnS precipitate
Only CuS precipitates
No precipitation occurs

Validate

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