Refrigerant 134a contained in a piston–cylinder assembly rapidly expands from an initial state where T1 5 1408F, p1 5 200 lbf/in.2 to a final state where p2 5 5 lbf/in.2 and the quality, x2, is (a) 99%, (b) 95%. In each case, determine if the process can occur adiabatically. If yes, determine the work, in Btu/lb, for an adiabatic expansion between these states. If no, determine the direction of the heat transfer