Chapter 6, Problem 16RQ

Summary Introduction

To review:

The reason for the stability of glucose (C₆ H₁₂O₆) in an oxygen atmosphere for appreciable periods of time if the change in enthalpy (ΔH) for the given reaction is –28.2 kJ/mol (kilo Joule per mole).

${\text{C}}_{\text{6}}{\text{H}}_{\text{12}}{\text{O}}_{\text{6}}+{\text{ 6O}}_{\text{2}}\to {\text{6CO}}_{\text{2}}+{\text{ 6H}}_{\text{2}}\text{O}$

Introduction:

Enthalpy of a reaction can be defined as the amount of heat absorbed or evolved in a reaction that is carried out at a constant pressure. It is given by the symbol ΔH.It is the sum of Gibbs’ free energy (G) of the system and the product of entropy change(ΔS) and temperature (T). It can be given by the equation: $\Delta H=\Delta G+T\Delta S$.