20.0dm^(3) of an ideal gas (diatomic C_("v,m")=5R//2) at 673 K and 0.7 MPa expands until pressure of the gas is 0.2 MPa. Calculate q, w, DeltaUandDeltaH for the process if the expansion is : (i) Isothermal and reversible (ii) Adiabatic and reversible (iii) Isothermal and adiabatic (iv) Against 0.2 MPa and adiabatic (v) Against 0.2 MPa and isothermal.

20.0dm^(3) of an ideal gas (diatomic C_("v,m")=5R//2) at 673 K and 0.7

1.	20.0dm^(3) of an ideal gas (diatomic C_("v,m")=5R//2) at 673 K and 0.7 MPa expands until pressure of the gas is 0.2 MPa. Calculate q, w, DeltaUandDeltaH for the process if the expansion is : (i) Isothermal and reversible (ii) Adiabatic and reversible (iii) Isothermal and adiabatic (iv) Against 0.2 MPa and adiabatic (v) Against 0.2 MPa and isothermal.
Answer» SOLUTION :(i) `q=-w=17.54kJ,DeltaU=0andDeltaH=0,` (II) `q=0,w=DeltaU=-10.536kJandDeltaH=-14.75kJ` (III) `q=0,w=0,DeltaU=0andDeltaH=0` (IV) `q=0,DeltaU=w=-7.14KJ,DeltaH=-9.996KJ`, (V) `q=-w=10.0KJ,DeltaU=DeltaH=0`