A saturated solution of `XCl_(3)` has a vapour pressure 17.20 mm Hg at `20^(@)C`, while pure water vapour pressure is 17.25 mm Hg. Solubility product (`K_(sp)`) of `XCl_(3)` at `20^(@)`C is :
A
`9.8 xx 10^(-2)`
B
`10^(-5)`
C
2.56x`10^(-6)`
D
7x`10^(-5)`
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The correct Answer is:
d
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