Chapter 15, Problem 66A

Interpretation Introduction

Interpretation:

The energy released in kilojoules 1 mol of ethanol releases 326.7 Calories is to be calculated.

Concept introduction:

The given amount of heat is to be converted into energy.

The conversion factor is:

$\begin{array}{l}1kJ=1000J\\ 1cal=4.184J\\ 1Cal=1000cal\end{array}$

Answer to Problem 66A

$326.7Cal=1367kJ$

Explanation of Solution

As, $\begin{array}{l}1kJ=1000J\\ 1cal=4.184J\\ 1Cal=1000cal\end{array}$

Therefore,

$\begin{array}{l}326.7Cal=326.7Cal\times \frac{1000cal}{1Cal}\times \frac{4.184J}{1cal}\times \frac{1kJ}{1000J}\\ =1367kJ\end{array}$