Chapter 9, Problem 9.114SP

Interpretation Introduction

Interpretation:

The value of $\Delta$ H^o in kilojoules for the synthesis of lime (CaO) from limestone (CaCO₃) needs to be determined.

Concept introduction:

The expression used for the calculation of $\Delta$ H^o for a reaction is as follows:

$\Delta$ H^o _reaction = $\Delta$ H^o f (product) - $\Delta$ H^o f(reactants)

Here, $\Delta$ H^o f is the standard heat of formation.

Consider a reaction as shown below:

$aA+bB+\dots \to cC+dD+\dots$

The expression for $\Delta$ H^o for this reaction is as follows:

$H^o{}_{reaction}=[c{H}^{o}f\left(C\right)+d{H}^{o}f(D)+\dots \left]–\right[a{H}^{o}f\left(A\right)+b{H}^{o}f\left(B\right)+\dots ]$ …. (1)