(a) 1.00 molal aqueous solution of trichloroacetic acid is heated to its boiling point. Boiling point of this solution was found to be 100 · 18^° C.…

1.$\displaystyle 00$ molal aqueous solution of trichloroacetic acid is heated to its boiling point. Boiling point of this solution was found to be $\displaystyle 100 \cdot 18^{\circ} \mathrm{C}$. Calculate the van't Hoff factor for trichloroacetic acid. (Given : $\displaystyle \mathrm{K}_{\mathrm{b}}$ for water $\displaystyle =0.512 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$)

State Henry's law. Calculate the mole fraction of $\displaystyle \mathrm{CO}_{2}$ in water at $\displaystyle 298$ K under $\displaystyle 760$ mm Hg. (Given : $\displaystyle \mathrm{K}_{\mathrm{H}}$ for $\displaystyle \mathrm{CO}_{2}$ in $\displaystyle \mathrm{H}_{2} \mathrm{O}$ at $\displaystyle 298 \mathrm{~K}=1 \cdot 25 \times 10^{6} \mathrm{~mm} \mathrm{Hg}$ )