EXAMPLE$-2$

Equimolar Counterdiffusion of $N{H}_3$ and $N_2$ at Steady State.

Ammonia gas $($A$)$ and nitrogen gas $($B$)$ are diffusing in counter diffusion through a straight glass tube $0\mathrm{.}610m$ long with an inside diameter of $24\mathrm{.}4mm$ at $\frac{298}{b}ar(K)$ and $101\mathrm{.}32$kPa. Both ends of the tube are connected to large mixed chambers at $101\mathrm{.}32$kPa. The partial pressure of $N{H}_3$ is constant at $20\mathrm{.}0.?2$kPa in one chamber and $6\mathrm{.}666$kPa in the other. The diffusivity at $298K$ and $101\mathrm{.}32$kPa is $2\mathrm{.}30{10}^{-5}\frac{m^2}{s}.D_{AB}$

Calculate:

a$)$ the diffusion of $N{H}_3$ in kgmo$\frac{l}{m^2}s.$

b$)$ the diffusion of $N_2.$

c$)$ the partial pressures at a point $0\mathrm{.}305m$ in the tube and plot $p_A,p_B,$ and $P$ versus distance $z.$