Chapter 9, Problem 9.29P

Interpretation Introduction

(a)

Interpretation:

The equation for the combustion of liquid ethanol needs to be balanced.

Concept introduction:

A chemical reaction is said to be balanced, if there are equal number of atoms of same elements on both sides of the reaction arrow.

Interpretation Introduction

(b)

Interpretation:

The combustion enthalpy of ethanol in kJ/mol needs to be determined.

Concept introduction:

For a reaction as follows:

$\text{reactant}\to \text{product}$

The value of enthalpy of reaction can be calculated as follows:

$\Delta H_{\text{reaction}}={\displaystyle \sum \Delta H_{f\text{,product}}}-{\displaystyle \sum \Delta H_{f,}{}_{\text{reactant}}}$