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1.0 g of non - electrolyte solute dissol...

1.0 g of non - electrolyte solute dissolved in 50 g of benzene lowered the freezing point of benzene by 0.4 K. Find the molar mass of the solute. [Given : Freezing point depression constant of benzene = 5.12 K. kg mol].

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`M_(2)=(K_(f)xxW_(2)xx1000)/(triangle T_(f) xxW_(2)`
`M_(2)=(K_(f)xxW_(2)xx1000)/(triangle T_(f) xxW_(2)`
=`(5.12k kg mol^(-1)xx1.0g xx 1000g Kg^(-1))/(0.4xx50g)`
=`256g mol^(-1)`
(i) Solubility decrease with increase in temperature (or )
Solubility increase with decreases in temperature .
(ii) Solubility increases with increases in pressure
(or)
Solubility decreases with decrease in prtessure .
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