Question $1[20]$

A mixture contains $5\mathrm{.}0$ mole$\%$ ethyl alcohol $(C_2{H}_{5}OH),75$ mole$\%$ ethyl acetate $(C_4{H}_8{O}_2)$ and $20\mathrm{.}0$ mole$\%$ acetic acid $(C{H}_3\frac{C}{O}OH).$

$1\mathrm{.}1$ Calculate the mass fractions of each component in the mixture.

$(10$ marks$)$

$1\mathrm{.}2$ What is the average molecular weight of the mixture?

$(5$ marks$)$

$1\mathrm{.}3$ What would be the mass $(kg)$ of a sample containing $25\mathrm{.}0$kmol of ethyl acetate?

$(5$ marks$)$

Question $2[30]$

$2\mathrm{.}1.$ Hydrogen can be separated from natural gas by diffusion through a round tube. The rate of separation is given by$,$

$N=2DR$

Where,

$N=$ the rate of transport of $H_2$ from the tube, gmoles$/($sec$)(cm$ of length of the tube$)$

$D=$ diffusion coefficient

$=$ molar density of $H_2,$ gmoles $\frac{?}{c{m}^3}$

$1$