In which process will the internal energy of the system NOT change?
A) An adiabatic expansion of an ideal gas.
B) An isothermal compression of an ideal gas.
C) An isobaric expansion of an ideal gas.
D) The freezing of a quantity of liquid at its melting point.
E) The evaporation of a quantity of a liquid at its boiling point.

Question

Quizplus · Accepted Answer

In an isothermal compression of an ideal gas, the internal energy of the system remains constant because the temperature is constant. Therefore, the work done on the gas is completely converted to heat, which is transferred out of the system. This is known as an isothermal process.

In Which Process Will the Internal Energy of the System