Chapter 18, Problem 18.37QP

Interpretation Introduction

Interpretation: The explanation for the belief of $19\text{th-}$ century scientists that all exothermic reactions were spontaneous is to be stated.

Concept introduction: The $\Delta G_{\text{rxn}}^{\text{ο}}$ of a reaction is calculated by the formula,

$\Delta G_{\text{rxn}}^{\text{ο}}=\Delta H_{\text{rxn}}^{\text{ο}}-T\Delta S_{\text{rxn}}^{\text{ο}}$

To determine: The explanation for the belief of $19\text{th-}$ century scientists that all exothermic reactions were spontaneous.