Question

What is adiabatic process? How is it different from an isothermal process?

Answer 1

An adiabatic process occurs without transfer of heat or mass of substances between a thermodynamic system and its surroundings. ... The adiabatic process provides a rigorous conceptual basis for the theory used to expound the first law of thermodynamics, and as such it is a key concept in thermodynamics.

Differences:

In contrast, an adiabatic process is where a system exchanges no heat with its surroundings (Q = 0). In other words, in an isothermal process, the value ΔT = 0 and therefore ΔU = 0 (only for an ideal gas) but Q ≠ 0, while in an adiabatic process, ΔT ≠ 0 but Q = 0.

Answer 2

In adiabatic process, no heat change occurs.

In isothermal process, no temperature change