19.Energy of reactant higher than energy of product favours

Explanation

The correct answer for what happens when the energy of reactants is higher than the energy of products is:(b) Exothermic reactionHere's why the other options are incorrect:(a) Endothermic: An endothermic reaction is one where the products have higher energy than the reactants, meaning they absorb heat from the surroundings to proceed. In this case, the reactants have higher energy than the products, which signifies an exothermic reaction.(c) Moderate reaction: There's no inherent relationship between the relative energy levels of reactants and products and the "moderateness" of a reaction. Both exothermic and endothermic reactions can have various rates and be considered fast, slow, or moderate depending on their specific kinetics and mechanisms.(d) No reaction: While a significant energy difference between reactants and products can influence the feasibility of a reaction, it doesn't necessarily preclude it altogether. Even exothermic reactions with a favorable energy change might need to overcome an activation energy barrier before proceeding.