Chapter 6, Problem 6.20P

Interpretation Introduction

Interpretation:

The two main components of the internal energy of a substance and the basis of those components are to be determined.

Concept introduction:

The internal energy of a process is the summation of the kinetic energy and potential energy associated with the process. In the case of a reaction, the change in internal energy $\left(\Delta E\right)$ is the difference in the energy of the product. The expression to calculate $\Delta E$ according to the first law of thermodynamics is:

$\Delta E=q+w$

Here,

$\Delta E$ is the change in internal energy of the system.

$q$ is the heat released or absorbed.

$w$ is the work done by the system or on the system