Question

An aqueous solution containing `21.6 mg` at a solute in `100 ml` of solution has an osmotic pressure of `3.70 mm` of `Hg` at `25^(@)C`. The molecular wt of solute in `g//mol` is
A. 1085
B. 9035
C. 1355
D. 700

Answer 1

Correct Answer - 1
`piV=(w)/(M)RT`
`(3.70)/(760)xx(100)/(1000)=(21.6xx10^(-3))/(m)xx0.0821xx298`
`m(` molecular mass `)=1085g//mol`