A. C = Cv - 2R
=> PdV/dT = -2R
=> RdV/V = -2RdT/T
=> lnV = -2lnT + c
=> VT2 = c (Q)
dW = -2RdT (R,S depends on Cv of gas)
A-Q
C. C = Cv + 2R
=> PdV/dT = 2R
=> RdV/V = 2RdT/T
=> lnV = 2lnT + c
=> V/T2 = c (P,R)
dW = 2RdT (T)
so C-PRT
rest can be done similarly...