Refrigerant-134a flows steadily through an adiabatic throttling valve. At the inlet to the valve, the fluid is a saturated liquid at 110.°F. At the valve outlet, the pressure is 20.0 psia. Neglecting any changes in kinetic and potential energy, determine
a. The quality of the fluid at the valve outlet.
b. The entropy production per pound of R-134a flowing through the valve.