R-134a enters the capillary tube of a refrigerator as saturated liquid at 0.8 MPa (T_{sat} = 31.31 °C, h = 95.48 kJ/kg) and is throttled to 0.12 MPa (T_{sat} = −22.32 °C, h_{f} = 22.47, h_{g} = 236.99 kJ/kg). Determine the quality of the refrigerant at the exit and the temperature drop (in °C).