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Solid AgNO(3) is gradually added to a so...

Solid `AgNO_(3)` is gradually added to a solution which is `0.01M` n `Cl^(-)` and `0.01 M` in `CO_(3)^(2-) K_(sp) AgCl=1.8x10^(-10)` and `K_(sp)Ag_(2)CO_(3)=4xx10^(-12)`
The cocentration of `Cl^(-)` when `Ag_(2)CO_(3)` starts precipating is

A

`1.8xx10^(-9)M`

B

`1.8xx10^(-5)M`

C

`1.2xx10^(-4)M`

D

`9xx10^(-6)M`

Text Solution

Verified by Experts

The correct Answer is:
D
`[Cl^(-)]=(K_(sp)AgCl)/([Ag^(+)])=(1.8xx10^(10))/(2xx10^(-5))`
`=9xx10^(-6)M`
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