Determine the osmotic pressure of a solution prepared by dissolving `25mg` of `K_(2)SO_(4)` in `2L` of water at `25^(@)C`, assuming that it is completely dissociated.

Explanation

If `K_(2)SO_(4)` is completely dissociated ,
`K_(2)SO_(4) hArr 2K^(+) + SO_(4)^(2-)`
I = 3
Mol. Mass of `K_(2)SO_(4) = 2 xx 39 + 32 + 4 xx 16 =174`
` pi = I cRT`
`I (W_(B) xx RT)/(M_(B) xx V)`
` = (3 xx 25 xx 10^(-3) xx 0.082 xx 298)/(174 xx 2.0)`
`5.27 xx 10^(-3)` atm.