1.

A solution of sucross (molar mass = 342 g "mol"^(-1)) has been prepared by dissolving 68.4 g of sucrose in one kg of water. K_(f) for water is "1.86 K kg mol"^(-1) and vapour pressure of water at 298 K is 0.024 atm. the osmotic pressure of the solution at 298 K will be

Answer»

4.29 ATM
4.49 atm
4.69 atm
4.89 atm

Solution :`pi=CRT=(68.4)/(342)xx0.082xx298="4.887 atm"`


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