Which property does not change due to the presence of an enzyme in a chemical reaction?

The property that does not change due to the presence of an enzyme in a chemical reaction is the equilibrium position. Enzymes function as catalysts by lowering the activation energy required for a reaction to proceed, which significantly increases the rate of the reaction. However, they do not alter the overall energy difference between the reactants and products, meaning that the position of equilibrium remains the same regardless of the presence of the enzyme.

Catalysts, including enzymes, can affect the rate at which equilibrium is reached but do not affect the concentrations of reactants or products at equilibrium. Therefore, the reaction will still end at the same equilibrium position, just potentially reached more quickly due to the enzyme's action.

The other properties mentioned, such as activation energy and rate of reaction, are significantly influenced by enzymes. Enzymes reduce activation energy, which facilitates a faster conversion of substrates into products. Temperature can also change during reactions but would not typically be directly affected by an enzyme; any changes would relate to external conditions rather than the enzyme itself.