NEET levelSingle correct optionDifficulty 1 of 3rg189
The Joule-Thomson effect refers to
Athe change in temperature of a gas on free expansion into vacuum
Bthe change in temperature of a gas when it expands through a porous plug at constant enthalpy
Cthe heating of a gas on compression
Dthe change in pressure of a gas on heating
Answer: B
In the Joule-Thomson experiment a gas is throttled through a porous plug from high to low pressure under adiabatic conditions; the process is isenthalpic. The temperature change observed is the Joule-Thomson effect, zero for an ideal gas.