What about Enthalpy at constant volume?
H = U + dPdV
U= I + W
W= -PdV
so under Isobaric conditions
H = I -PdV + dPdV
= U
Enthalpy = Internal Energy
_________________________________________
Under Isochoric Conditions
W= O because change in V =o
so U = q + 0
Internal Energy = q
But wouldnt Enthalpy also = q under constant volume since dPdV = 0 as well if volume isnt changing?
I think i'm confusing the dPdV in the Enthalpy equation!
H = U + dPdV
U= I + W
W= -PdV
so under Isobaric conditions
H = I -PdV + dPdV
= U
Enthalpy = Internal Energy
_________________________________________
Under Isochoric Conditions
W= O because change in V =o
so U = q + 0
Internal Energy = q
But wouldnt Enthalpy also = q under constant volume since dPdV = 0 as well if volume isnt changing?
I think i'm confusing the dPdV in the Enthalpy equation!