Changing the temperature of a reaction system can sometimes influence which type of reaction occurs, leading to different products at higher reaction temperatures than at lower. One of the most important variables in determining whether a reaction pathway will be influenced by temperature is the entropy change of the system. In many organic reactions, the entropy change of the reaction is close to zero, meaning that the TΔSterm becomes negligible in the Gibbs free energy expression (ΔG = ΔH – TΔS). In these cases, ΔG is approximately equal to ΔH. Considering the above information, which of these chemical reactions would Δ G be approximately equal to ΔH?