Question

An adiabatic expansion of an ideal gas always has:

• A. decrease in temperature
• B. $W=0$
• C. $q=0$
• D. $\Delta H=0$

Answer 1

Answer: (C)

$q=0$

A process is called adiabatic if the system does not exchange heat with the surrounding, i.e., q=0.

An adiabatic process may involve increase of decrease in temperature of the system. In an adiabatic expansion of an ideal gas, there is no change of temperature because there is no intermolecular interaction between its particles.