An adiabatic process is one in which no heat is gained or lost by the system. The first law of thermodynamics with Q=0 shows that all the change in internal energy is in the form of work done. ... This condition can be used to derive the expression for the work done during an adiabatic process.

What happens during the adiabatic process?

adiabatic process, in thermodynamics, change occurring within a system as a result of transfer of energy to or from the system in the form of work only; i.e., no heat is transferred. A rapid expansion or contraction of a gas is very nearly adiabatic.

What is constant in an adiabatic process?

In thermodynamics, an adiabatic process is defined as a process in which no transfer of heat takes place from the system to the surrounding neither in case of expansion nor during compression. ... Thus, we can conclude that in an adiabatic process, the quantity which remains constant is the total heat of the system.