Please help hopefully some explaination too Thanks Movable p

Please help, hopefully some explaination too. Thanks

Movable partition Insulation CO2 Air 2. (20) 2kg of air, initially at 2 bar, 650 K and 4kg of m t 4 k m m 2 kg carbon dioxide (CO2), initially at 4 bar, 450 K are p 2 bar p 4 bar T 450 K T 650 K confined to opposite sides of a rigid, well Page 2 of 7 insulated container by a partition, which is free to move and allows conduction from one side to the other without energy storage. The system reaches equilibrium at the end. The air and Co2each behave as ideal gases with constant specific heats No numerical answers needed for this problem! i. (5) What is the condition for equilibrium? ii. (10) Using the second Tds equation, the entropy of CO2 (B) decreases (A) increases (C) remains the same (D) is indetminate The entropy of air (B) decreases (A) increases (C) remains the same (D) is indetminate Hint: determine the relation between the equilibrium temperature and pressure with the initial temperature and pressure of the co2 and air. Also, ln x 0 if x 1 and In x

Solution

From the above given data

Condition for equillibrium = 0.7

Entropy of co2 will increase

Entropy of air willl decrease