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Why only As^(+3) gets precipitated as ...

Why only `As^(+3)` gets precipitated as `As_(2) S_(3)` and not `Zn^(2+)` as ZnS when `H_(2)`S is passed through an acidic solution containing `As^(+1) and Zn^(+2)`?

A

Solubility product of `As_2S_3` is less than that of Zns

B

Enough `As^(+3) ` are present in acidic medium

C

Zinc salt does not ionise in acidic medium

D

Solubility product change in presence of an acid.

Text Solution

Verified by Experts

The correct Answer is:
A
Because IP of `As_2S_3 gt ` KsP but not for ZnS as `[S^(2-) ] ` is less
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AAKASH SERIES-IONIC EQUILIBRIUM -PRACTICE SHEET (EXERCISE -IV LEVEL -I (ADVANCED) (Straight Objective Type Questions))
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  3. K(Sp) of MX =K(sp) " of " MX2. Which is more soluble ?

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  7. What can be permitted concentration of Ag^(+) ions in 0.1 M HCN solu...

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  8. When HCl gas is passed through a saturated solution of common salt, pu...

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  9. How do we differentiate between Fe^(3+) and Cr^(3+) in group III ?

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  10. Why only As^(+3) gets precipitated as As(2) S(3) and not Zn^(2+) as ...

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  11. A saturated solution of o- nitrophenol has a pH equal to 4.53 then its...

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  12. In the lollowing reuction. AgCl +KI hArr KCl + Agl. As Kl is added, t...

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  13. K(Sp) of MX =K(sp) " of " MX2. Which is more soluble ?

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  14. The solubility of solid silver chromate. Ag(2) CrO(4) . is determined ...

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  15. The maximum pH of a solution which is 0.10 M in Mg ^(2+ ) from which...

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  16. What will be the result if 100 mlL of 0.06 M Mg(NO(2))(2) is added to ...

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  17. What can be permitted concentration of Ag^(+) ions in 0.1 M HCN solu...

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  18. When HCl gas is passed through a saturated solution of common salt, pu...

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  19. How do we differentiate between Fe^(3+) and Cr^(3+) in group III ?

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  20. Why only As^(+3) gets precipitated as As(2) S(3) and not Zn^(2+) as ...

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