A large SSSF air separation plant takes in ambient air (79% N2, 21% O2 by volume) at

Question:

A large SSSF air separation plant takes in ambient air (79% N2, 21% O2 by volume) at 100 kPa, 20C, at a rate of 1 kmol/s. It discharges a stream of pure O2 gas at 200 kPa, 100C, and a stream of pure N2 gas at 100 kPa, 20C. The plant operates on an electrical power input of 2000 kW. Calculate the net rate of entropy change for the process.