A closed tank contains 2 kg of saturated liquid water, initially at 80°C (state 1). Heat transfer occurs and the
tank is allowed to expand such that the liquid-vapor mixture remains at 80°C. At some point during this process (state i for intermediate) the tank becomes rigid, after which more heat is added until the tank contains only saturated vapor with v = 2.045 m3 /kg (state 2). (a) Sketch this process on P-v and T-v diagrams. (b) Find P, T, and v for all three states, and summarize them in a table. (c) Determine the heat transfer into the system during this process, Q12.