The products of a reaction are given to have, overall, greater entropy than the reactant under standard conditions. The sign of Δ S rxn ° is to be stated. Concept introduction: Entropy is a thermodynamic property which shows the randomness or disorder of the atoms within the system. The difference in the entropy of the reactant and products is known as the change in the entropy of a reaction Δ S rxn ° . The entropy of a reaction is calculated by the formula, Δ S rxn ° = ∑ n products S products ° − ∑ n reactants S reactants ° To determine: The sign of Δ S rxn ° when products of a reaction have greater entropy than the reactant under standard conditions.

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Chapter 18, Problem 18.27QP

Interpretation Introduction

Interpretation: The products of a reaction are given to have, overall, greater entropy than the reactant under standard conditions. The sign of ΔSrxn° is to be stated.

Concept introduction: Entropy is a thermodynamic property which shows the randomness or disorder of the atoms within the system.

The difference in the entropy of the reactant and products is known as the change in the entropy of a reaction ΔSrxn° .

The entropy of a reaction is calculated by the formula,

ΔSrxn°=∑nproductsSproducts°−∑nreactantsSreactants°

To determine: The sign of ΔSrxn° when products of a reaction have greater entropy than the reactant under standard conditions.

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