Question

Is reversible adiabatic process possible?

Answer 1

There are no conditions on it concerning the existence of heat exchange, so there is no problem in having an adiabatic or a non adiabatic reversible process (theoretically). However, in practice, reversible processes themselves are impossible.

Answer 2

• I imagine an adiabatic process in an open system (where only mechanical work is done), i.e, dQ = 0, but dM NOT EQUAL to 0.