Referring to the figure shown below, water contained in a piston-cylinder assembly, initially at 1.5 bar and a quality of 40%, is heated at constant pressure until the piston hits the stops. Heating then continues until the water is saturated vapor. The initial height, L1, is 0.05 m and the change in height, L2, is 0.03 m. Patm-1 bar Piston Water P₁ = 1.5 bar L₁ For the overall process of the water, evaluate the work and heat transfer, each in kJ/kg. Kinetic and potential effects are negligible.

Figure P2.33 shows a portion of the H,O-NaCl phase diagram. 10 Liquid (brine) Salt Ice + -10 F liquid (brine) liquid (brine) -20 Ice + salt -30 NaCI 10 20 30 H2O 100 90 80 70 FIGURE P2.33 Composition, weight % a. Using the diagram, briefly explain how spreading salt on ice causes the ice to melt. Show numerical examples in your discussion. b. At a salt composition of 10%, what is the temperature at which ice will start melting? c. What is the eutectic temperature of the ice and salt combination? Temperature, °C