Osmotic pressure of a sugar solution at `24^(@)C` is 2.5 atmosphere .Determine the concentration of the solution in gram mole per litre.

Options

A. 0.0821 moles/litre
B. 1.082 moles/litre
C. 0.1025 moles/litre
D. 0.0827moles/litre

Answer

C

Explanation

Here it is given that
`pi=2.5" atm T"=24+273=297K,S=0.0821" lit. atm."`
`deg^(-1)mol^(-1),C=?`
We know that `pi` = CST
`"or "C=pi/(ST)=2.5/(0.0821xx297)`
= 0.1025 moles/litre