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  • Please,please help me Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 x 10-4 mol L-1. Solubility product of Ag2C2O4 is :

Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 x 10-4 mol L-1. Solubility product of Ag2C2O4 is :

  • Option 1)

    2.42 x 10-8

  • Option 2)

    2.66 x 10-12

  • Option 3)

    4.5 x 10-11

  • Option 4)

    5.3 x 10-12

 

Answers (1)

 

Solubility product constant -

e.g.

BaSO_{4}\rightleftharpoons Ba^{2+}(aq)+SO_{4}^{2-}(aq)


K=\frac{[Ba^{2+}]\:[SO_{4}^{2-}]}{[BaSO_{4}]}

- wherein

For a pure solid substance the concentration remain constant

\therefore \:K_{sp}=K[BaSO_{4}]
 

               =[Ba^{2+}]\:[SO_{4}^{2-}]
 

    K_{sp}=solubility\:product

 

 Ag_{2}C_{2}O_{4}\rightleftharpoons 2Ag^{+}+C_{2}O_{4}^{2-}

[Ag^{+}]=2[C_{2}O_{4}^{2-}]=2.2\times 10^{-4}

=[C_{2}O_{4}^{2-}]=1.1\times 10^{-4}

K_{sp}=[Ag^{+}]^{2}[C_{2}O_{4}^{2-}]

=\left ( 2.2\times 10^{-4} \right )^{2}\left ( 1.1\times 10^{-4} \right )

=5.324\times 10^{-12}

 


Option 1)

2.42 x 10-8

This is incorrect option

Option 2)

2.66 x 10-12

This is incorrect option

Option 3)

4.5 x 10-11

This is incorrect option

Option 4)

5.3 x 10-12

This is correct option

Posted by

Sabhrant Ambastha

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