Determine the osmotic pressure of a solution prepa.red by diHolving 2.5 `xx 10^(-2)` g of a solution 2I. Of water at `25^(@)` C, assuming that it is completely dissociated.
`(R = 0.0821 " L atm K"^(-1) mol^(-1) , " molar mass of" K_(2)SO_(4) = 174 g " mol"^(-1)`)

Explanation

When `K_(2) SO_(4)` is dissolved in water, ions are produced.
Total number of ions produced = 3
i= 3
`pi = I"CRT " = (I xx n xx R xx T)/(V)`
`pi = 3 xx (25 xx 10^(-2)g)/(174 g "mol"^(-1)) xx (1 xx 0.0821 " L atm " xx 298)/(2I)
= 0.00176 " " K^(-1) mol^(-1) xx 298` K
`pi 5.27 xx 10^(-3) ` atm