Question

In an adiabatic expansion of a gas,what is the effect on its temperature :

 

Answer 1

For the adiabatic process of gas, the heat is kept zero.

In the adiabatic expansion of the gas, the work done by the gas is always positive.

 

Since the work done by the gas is positive the internal energy decreases, so the temperature of the gas also decreases.

Formula used:

The first law of Thermodynamics, Q = (Uf−Ui)+W,

where Q = Heat gain or loss in a system,

(Uf−Ui) = Change in internal energy of the gas.

W= Work done by the gas.

 

 

In an adiabatic expansion of gas,its temperature decreases.