Question

A solution of sucrose (molar mass = 342 g/mol) is prepared by dissolving 68.4 g of it per litre of solution, what is its osmotic pressure at 273 K?
`(R = 0.081 L atm K^(-1) mol^(-1))`
A. 3.92 atm
B. 4.48 atm
C. 5.92 atm
D. 29.4 atm

Answer 1

Correct Answer - B
`pi = CRT = W_(2)/(M_(2) xx V (dm^(3))) xx R xx T ` `= (68.4 xx 0.0821 xx 273)/(342 xx 1)=4.48 "atm"`