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The solubility of Ba3(AsO4)2 (formula w...

The solubility of `Ba_3(AsO_4)_2` (formula weight =690 ) is `6.9 xx 10^(-2) g//100 ml. `what is the `K_(sp) ` ?

A

`1.08 xx 10^(-11)`

B

` 1.08 xx 10^(-13)`

C

` 1.0 xx 10^(-15)`

D

` 6.0 xx 10^(-13)`

Text Solution

Verified by Experts

The correct Answer is:
B
`S= 6.9 xx 10^(-2) gm // 100ml `
` =(6.9xx10 ^(-2))/( 690 ) mol //100 ml `
` = 10 ^(-4) " mole " //100ml `
`therefore 100ml -10 ^(-4) "mole " `
` 100 ml -10 ^(-4) " mole " `
` rArr 10 ^(-3) " moles" rArr K_(Sp) =108 S^(5) `
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  16. The solubility of Ba3(AsO4)2 (formula weight =690 ) is 6.9 xx 10^(-...

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