Problem 3: Entropy change and process reversibility or irreversibility

A metallic tank contains ten moles of gas. This tank is at T=450 K and the gas is initially at P = 0.7 bar and also at T

= 450 K. You then take this tank and place it inside a furnace which is at a constant T = 600 K. The tank and the gas

inside eventually reach thermal equilibrium with the furnace. We would like to make some thermodynamics

calculation and for that you can assume the gas to be an ideal gas at the pressures attained throughout this process.

You may also assume the gas has a constant heat capacity of Cy* = 2.5R. The mass of the tank alone is 11 kg (not

including gas mass inside the tank) and its specific heat capacity of Cv= 1.5 J/g.K.

Find the Following: