Chapter 10, Problem 170AP

Interpretation Introduction

Interpretation:

The balanced equation, enthalpy of reaction, the volume of oxygen required, and the volume of sulfur trioxide produced are to be calculated. The diagram that bestrepresents the final combination of the given reaction is to be determined.

Concept introduction:

The standard enthalpy for a reaction is the amount of enthalpy, which is to occur at standard conditions.

The standard enthalpy of a reaction is to be determined by using the equation as given below:

$\Delta H{\text{°}}_{\text{rxn}}={\displaystyle \sum n}\Delta H_{\text{f}}^{°}\left(\text{products}\right)-{\displaystyle \sum m}\Delta H_{\text{f}}^{°}\left(\text{reactants}\right)$

Here, the stoichiometric coefficients are represented by m for the reactants and n for the products and the enthalpy of formation at standard conditions is represented by $\Delta H_{\text{f}}^{°}$.

The value of enthalpy of formation of an element is zero at its most stable state.