Question

Why is photosynthesis an endothermic reaction?

Answer 1

The answer would be A because first, B is an exothermic reaction. C also describes an exothermic reaction because energy is released. There is an exchange of energy between the sun and the plant, therefore it is not the last answer either.

Answer 2

Answer: The correct answer is a large amount of energy is required to activate the reaction.

Explanation:

An endothermic reaction is defined as the reaction in which energy of the products is more than the energy of the reactants. The energy is absorbed during this reaction and the total enthalpy change of the reaction comes out to be positive.

Photosynthesis is defined as the process by which the producers make glucose with the help of carbon dioxide and water in the presence of sunlight. The chemical equation representing this reaction follows:

$6CO_2+6H_2O+\text{light}\rightarrow C_6H_{12}O_6+6O_2$

As. energy is written on the reactant side of the reaction. This means that energy is getting absorbed in the reaction.

Hence, the correct answer is a large amount of energy is required to activate the reaction.