Binary distillation involves the mass transfer by __________ at the gasliquid interface.
(A) Unidirectional diffusion from liquid to gas phase
(B) Unidirectional diffusion from gas to liquid phase
(C) Either 'a' or 'b'
(D) A counter diffusion at an almost equal molar rate
(A) Unidirectional diffusion from liquid to gas phase
(B) Unidirectional diffusion from gas to liquid phase
(C) Either 'a' or 'b'
(D) A counter diffusion at an almost equal molar rate