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  • The stoichiometry and solubility product of a salt with the solubility curve given below, respectively: <img alt="" src="https://cdn.entrance360.com/media/uploads/2020/01/16/kghfty.p

The stoichiometry and solubility product of a salt with the solubility curve given below, respectively:

 

Option: 1

X_{2}Y,2\times 10^{-9}M^{3}


Option: 2

XY_{2},1\times 10^{-9}M^{3}


Option: 3

XY_{2},4\times 10^{-9}M^{3}

 


Option: 4

XY,2\times 10^{-6}M^{3}


Answers (1)

1) \mathrm{X_2Y(s)\: \rightarrow \: 2X^{+}(aq)\: +\: Y^{-}(aq)}
                             2 X 10-3            10-3

Ksp = [X+ ]2 [Y– ] =  (2 X10–3 )2 X 10–3  =  4 X 10–6

 

2) \mathrm{XY_2(s)\: \rightarrow \: X^{+}(aq)\: +\: 2Y^{-}(aq)}
                              10-3             2 X 10-3 

Ksp = [X+ ]2 [Y– ] = 10–3  X  (2 X10–3 )2   =  4 X 10–6

 

3) \mathrm{XY(s)\: \rightarrow \: X^{+}(aq)\: +\: Y^{-}(aq)}
                               10-3              10-3

Ksp = [X+ ] [Y– ] =  10–3 X 10–3  =  10–6

 

So, \mathrm{XY}_{2}, 4 \times 10^{-9} \mathrm{M}^{3} will be correct.

Therefore, Option(3) is correct.

Posted by

Sumit Saini

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