Chapter 5.6, Problem 1CP

Interpretation Introduction

Interpretation:

The standard enthalpy of the reaction is to be calculated.

Concept Introduction:

The enthalpy of a reaction that takes place under standard conditions is known as the standard enthalpy of the reaction.

The standard enthalpy of reaction can be calculated as follows:

$\Delta H{°}_{rxn}=\left[c\Delta H{°}_f\left(C\right)+d\Delta H{°}_f\left(D\right)\right]-\left[a\Delta H{°}_f\left(A\right)+b\Delta H{°}_f\left(B\right)\right]$

Here C, D are products and A, B are reactants while c, d, a, and b are their respective stoichiometric coefficients.

The standard enthalpy of the formation of an element in its standard state, which is also known as the most stable state, is zero.