The elevation in boiling point when of acetic acid is dissolved in of benzene is . Calculate the…

The elevation in boiling point when $0\cdot30\text{ g}$ of acetic acid is dissolved in $100\text{ g}$ of benzene is $0\cdot0633^\circ\text{C}$. Calculate the molecular weight of acetic acid from this data. What conclusion can you draw about the molecular state of the solute in the solution? (Given $K_b$ for benzene $= 2\cdot53\text{ K kg mol}^{-1}$, at. wt. of $\text{C} = 12$, $\text{H} = 1$, $\text{O} = 16$)

Determine the osmotic pressure of a solution prepared by dissolving $0\cdot025\text{ g}$ of $\text{K}_2\text{SO}_4$ in $2\text{ litres}$ of water at $25^\circ\text{C}$, assuming that $\text{K}_2\text{SO}_4$ is completely dissociated. ($R = 0\cdot0821\text{ Lit-atm K}^{-1}\text{mol}^{-1}$, mol. wt. of $\text{K}_2\text{SO}_4 = 174\text{ g mol}^{-1}$)