Ammonia gas is diffusing through $N_2$ under steady$-$state conditions with $N_2$ nondiffusing since it is insoluble in one boundary. The total pressure is $1\mathrm{.}013{10}^{5}Pa$ and the temperature is $298K.$ The partial pressure of $N{H}_3$ at one point is $1\mathrm{.}333{10}^{4}Pa,$ and at the other point $20mm$ away it is $6\mathrm{.}666{10}^{3}Pa.$ The $D_{AB}$ for the mixture at $1\mathrm{.}013{10}^{5}Pa$ and $298K$ is $2\mathrm{.}30{10}^5\frac{m^2}{s}.$

a$.$ Draw the schematic diagram showing the above conditions.

b$.$ What is meant by the partial pressure?

c$.$ Write down the equation for the equimolar diffusion case and also the equation for unimolar diffusion case.

d$.$ For the above case, is it equimolar or unimolar diffusion case?

e$.$ Determine the flux of $N{H}_3$ in kgmo$\frac{l}{s}*m^2.$