Refrigerant-134a at 240 kPa and 20oC undergoes an isothermal process in a closed systemuntil its quality is 20 percent. On a per unit mass basis, determine how much work andheat transfer are required....

Refrigerant-134a at 240 kPa and 20oC undergoes an isothermal process in a closed systemuntil its quality is 20 percent. On a per unit mass basis, determine how much work andheat transfer are required. Show this process on a T-s diagram. How does the entropychange of the system vary assuming a) a reversible process and b) an irreversible process?