A flow of gas A and a flow of gas B are mixed in a 1:1 mole ratio with same T. What is the entropy generation per kmole flow out?

Data:

$A:B=1:1$ -Mole ratio.

We assuming:

Steady state.

No change in temperature.

Kinetic and potential energy changes are negligible.

$$\textbf{Task is to determine entropy generation per kmole flow.}$$