Question

9. In which process the enthalpy remains constant :

(A) Adiabatic expansion

(B) Isobaric expansion

(C) Joule expansion

(D) Joule Thomson expansion​

Answer 1

Answer:

An adiabatic process is a process in which no heat is exchanged. An adiabatic and reversible process has constant entropy s--it is isentropic. An isenthalpic process has constant enthalpy, and probably there is a myriad ways to realize such a process.

Answer 2

Answer:

D

Explanation:

according to Joule Thomson expansion the enthalpy of the system is constant. these phenomenon occur in throttling proces

in throttling process

Q=0

W=0

U=0

as we know

Enthalpy is U +PdV(Work done)

put U and W is zero

h=0

hence D option is correct

hence D option is correct hope it will helpful to you.