Question

clicker question which of the following does not affect the rate (speed) of an exothermic reaction? a. temperature b. the energy difference between reactants and products c. concentrations of reactants d. presence of a catalyst e. all of these factors influence the rate of reaction

Explanation:

The rate of a reaction is affected by temperature (higher temperature generally increases reaction rate), reactant concentrations (higher concentrations usually speed up the reaction), and the presence of a catalyst (which lowers activation - energy and increases the rate). However, the energy difference between reactants and products (whether the reaction is exothermic or endothermic) only determines the overall energy change of the reaction, not its rate.

Answer:

B. The energy difference between reactants and products