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A solution containing Mn^(2+),Fe^(2+),Zn...

A solution containing `Mn^(2+),Fe^(2+),Zn^(2+)andHg^(2+)` with a molar concentration of `10^(-3)` M each is treated with `10^(-16)M` sulphide ion solution. Which ion will precipitate first if `K_(sp)` of MnS, FeS, ZnS and HgS are `10^(-15),1-^(-23),10^(-20)and10^(-54)` respectively ?

A

FeS

B

MnS

C

HgS

D

Zns

Text Solution

Verified by Experts

The correct Answer is:
ABCD
(ABCD)In presence of alkaline medium, concentration of sulphide ion will increase, thus all ions gets precipitated
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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 ?

A solution which is 10^(-3) M each in Mn^(2+),Fe^(2+),Zn^(2+)andHg^(2+) is treated with 10^(-16)M sulphide ion. If K_(sp) od MnS, ZnS and HgS are 10^(-15),10^(-25),10^(-20)and10^(-54) respectively, which one will precipitate first ?

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