$(40$ pts$)[$Gas Absorption$]$ Molar flux across the interface is

continuous so that $N_A^G=k_G(p_{A,G}-p_{A,i})=N_A^L=k_G(c_{A,i}-c_{A,L}).$

However, since interface compositions themselves are not

measurable. Fluxes in terms of bulk composition difference can be

expressed as $N_A^G=K_G(p_{A,G}-p_A^{*})=N_A^L=K_G(c_A^{*}-c_{A,L}).$

Using henry's law $(p_{A,i}=m{c}_{A,i}),$ show that the $\frac{1}{K_G}=\frac{1}{k_G}+\frac{m}{k_L}.$