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When pure water is saturated with CaCO(3...

When pure water is saturated with `CaCO_(3)` and `CaC_(2)O_(4)` the concentration of calcium ion in the solution under equilibrium is `8xx10^(-5)` M. If the ratio of the solubility product of `CaCO_(3)` to that of `CaC_(2)O_(4)` is 3, what is the solubility of `CaCO_(3)` in pure water?

A

`4.80xx10^(-8)`

B

`9.60xx10^(-9)`

C

`9.62xx10^(-8)`

D

`6.93xx10^(-5)`

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The correct Answer is:
d
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