A.in the case of steady-state equimolal counter-diffusion
B.in the case of steady-state unimolal unidirectional diffusion
C.both in the case of steady-state equimolal counter-diffusion and steady-state unimolal unidirectional diffusion
A.in the case of steady-state equimolal counter-diffusion
B.in the case of steady-state unimolal unidirectional diffusion
C.both in the case of steady-state equimolal counter-diffusion and steady-state unimolal unidirectional diffusion