Two moles of an ideal gas at 2 atmand 27^(@)Care compressed isothermally to halfthe volume by an externalpressure of4 atm. Calculate w, q and DeltaU.

Two moles of an ideal gas at 2 atmand 27^(@)Care compressed isothermal

1.	Two moles of an ideal gas at 2 atmand 27^(@)Care compressed isothermally to halfthe volume by an externalpressure of4 atm. Calculate w, q and DeltaU.
Answer» Solution :`V_("initial")= (nRT)/(P) = (2 mol xx 0.0821 L atm K^(-1) mol^(_1) xx 300 K)/(2 atm) =25.42 L, V_("final") = (25.42)/(2)= 12.71L` `:. w = -P_(EXT) DELTAV=- 4 atm xx ( 12.71 -25.42) L= 4 xx 12.71 L atm= 50.84 Latm=50.84 xx 101.3 J= 5150 J`