Question

Find the osmotic pressure M/20 solution of urea at `27^(@)C (S = 0.0821 lit atm K^(-1) mol^(-1))`

Answer 1

Applying the equation `PV = n.ST`,
`P=(n)/(V).ST`
or P = Molarity `xx S xx T`
Given, molarity `=(1)/(2)=0.05,S=0.0821 and T = 27+273=300K`
Substituting values,
`P = 0.05 xx 0.0821 xx 300 = 1.2315` atm.