1.

Calculate the concentration of that solution of sugar which has osmotic pressure of 2.46 atmosphere at 300 K.

Answer»

Solution :Here, we are GIVEN that`""pi= "2.46 atm,T = 300 K,R = 0.821 L atm K"^(-1)"mol"^(-1)`
USING the equation, `pi=CRT,` we have
`C=(pi)/(RT)=("2.46 atm")/("0.0821 Latm K"^(-1)"mol"^(-1)xx"300 K")="0.1 Maaprox. = 34.2 g/litre."`
`""(because"MOLAR mass of sugar "C_(12)H_(22)O_(11)="342 g mol"^(-1))`


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