Question

The enthalpy of a system is the same as its:

A. specific heat.

B. heat of reaction.

C. heat of combustion.

D. heat content.

Answer 1

We know that the fundamental definition of enthalpy is dH=dU+pdV. This is saying basically that the enthalpy of the system is the change in internal energy PLUS the product of the pressure(volume) term. What does this tell you?

Answer 2

Um... C?

Answer 3

Try B. But we engineers often do note the enthalpy as the total heat content of a system, because it includes both internal energy and p(V) term energy.

Answer 4

Oooh I see... thank you Engineer lol.