Chapter 5, Problem 16QP

Interpretation Introduction

Interpretation:

Amount of heat whether absorbed or released is to be calculated when given amount work is done by the system on surrounding.

Concept introduction:

The first law of thermodynamics states that heat is a form of energy. Energy can neither be created nor be destroyed in an isolated system.

Equation for the first law is as follows:

$\Delta U=q+w$

Here, U is the internal energy of the system, q is the heat given to or removed from the system, and w is the work done by or to the system.

If the sign of q is positive, heat is absorbed by the system.

If the sign of q is negative, heat is released by the system.