Enthalpy change, ΔH, is:
A) the sum of heat absorbed and work.
B) not a thermodynamic state function.
C) a measure of disorder in a system.
D) determined by pressure change at a constant temperature.
E) equal to the heat transferred at constant pressure and volume.

Question

Quizplus · Accepted Answer

Enthalpy change, ΔH, is defined as the heat transferred at constant pressure and constant volume. This means that the enthalpy change only takes into account the change in heat energy at constant pressure and volume, and not any work done by the system or any changes in pressure or temperature.

Enthalpy Change, ΔH, Is