1. A rigid container contains saturated water at a pressure of 2 bar and a quality of 0.64.

The water undergoes a process in which it is heated to a final temperature of 540C.

Determine the final pressure of the container, and the energy transferred by work and

by heat during this process. NOTE: use the steam tables in your calculations.

2. Consider boiling water to make a pot of tea. Say it takes roughly 18 min to bring 2 L of

HO taken from the tap at 25C to boil. What is the total heat input, Q? What is the rate

of heat input, Q? You may assume the tea kettle is a closed system with constant

pressure. NOTE: for this problem, we will assume that the properties of liquid water do

not change considerably with pressure, so you may use the properties of saturated

liquid at 25C to approximate the liquid properties at 25C.

3. A horizontal, frictionless piston-cylinder assembly is placed in an isothermal bath.

Initially, the system contained within is in equilibrium with an external pressure of 15

bar. The initial gas volume is 0.06 m3. The external pressure on the piston is gradually

reduced, and the gas expands isothermally and reversibly until its volume has doubled.

If the pressure of the gas and its volume are related so that Pv is constant, what is the

work done by the gas during the expansion process?