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For the reaction Ag(CN)(2)^(-)+Ag^(+)+2C...

For the reaction `Ag(CN)_(2)^(-)+Ag^(+)+2CN^(-)`, the equilibrium constant at `25^@C" is "4 xx 10^(-19)`. Calculate the `Ag^(+)` concentration in a solution which was originally 0.1 molar in KCN and 0.03 molar in `AgNO_3`.

A

`7.5 xx 10^18`

B

`7.5 xx 10^(-19) `

C

`7.5 xx 10^19`

D

`7.5 xx 10^(-18)`

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The correct Answer is:
B
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