A solution which is 10^ -3 M each in Mn^ 2+ , Fe^ 2+ , Zn^ 2+ and Hg^ 2+ is treated with 10^ -16 M sulphide...

Question

A solution which is 10^ -3 M each in Mn^ 2+ , Fe^ 2+ , Zn^ 2+ and Hg^ 2+ is treated with 10^ -16 M sulphide ion. If K_ sp of MnS, FeS, ZnS and HgS are 10^ -15 , 10^ -23 , 10^ -20 and 10^ -54 respectively, which one will precipitate first?

Accepted Answer

(C)

JEE Main Chemistry question

Solution

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