Two bulbs are joined by a small insulated tube. The bulbs are filled with a mixture of ideal gases A and B, and maintained at constant temperatures T1 and T2.
Convection is neglible.
Derive the steady-state gas composition for the two bulbs. 18.4-15 to find the mass flux caused by the temperature gradient in the system. The mass flux now contributes to a concentration gradient, which results in an opposed flux. Conversely, when kT is negative, A moves to the hot area.