Chapter 5.8, Problem 2.1ACP

Interpretation Introduction

Interpretation:

The enthalpy change of the combustion of ethanol and octane has to be calculated and compared

Concept Introduction:

Standard enthalpy of the reaction,${\text{Δ}}_{\text{r}}{\text{H}}^{\text{o}}$, is the change in enthalpy that happens when matter is transformed by a given chemical reaction, when all reactants and products are in their standard states.

Enthalpy change for the reaction ${\text{Δ}}_{\text{r}}{\text{H}}^{\text{0}}$=${\text{ΣnΔ}}_{\text{f}}{\text{H}}^{\text{0}}\text{(products)}\text{-}{\text{ΣnΔ}}_{\text{f}}{\text{H}}^{\text{0}}\text{(reactants)}$

Enthalpy of the reaction,${\text{Δ}}_{\text{r}}\text{H}$, is the change in enthalpy that happens when matter is transformed by a given chemical reaction