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How many grams of CaC(2)O(4) (molecular ...

How many grams of `CaC_(2)O_(4)` (molecular weight = 128) on dissolving water will give a saturated solution `[K_(sp)(CaC_(2)O_(4)) = 2.5 xx 10^(-9) mol^(2) I^(-2)]`

A

`0.0064 g`

B

`0.1280` g

C

`0.0128 g`

D

`1.2800` g

Text Solution

Verified by Experts

The correct Answer is:
A
Solubility of `CaC_(2)O_(4)=sqrt(K_(sp))=sqrt(2.5 xx10^(-9))`
` = 5 xx10^(-5) "molL"^(-1)`
`= 5 xx10^(-5) xx128 = 640 xx 10^(-5) = 0.0064 g`
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