Question

In which of the following processes, the total energy of the products formed will be greater than the reactants?
i. Photosynthesis
ii. Boiling of water
iii. Respiration
iv. Rusting of iron​

Answer 1

Answer:

1 . Photosynthesis is the answer

Answer 2

Answer:  In $(i)$ and $(ii)$ process, total energy of products is more.

Explanation:

• The total energy of the products formed will be greater than the reactants in the case of endothermic reactions.
• Endothermic reactions are those in which heat energy is absorbed and it can be represented as:

             $E _{reactants }+ heat = E_{products}$

• As in photosynthesis, sunlight is used as energy and in boiling of water, heat energy is used. So in these processes the total energy of the products formed will be greater than the reactants.
• But respiration and rusting of iron are exothermic reactions i.e. heat energy is released. Therefore in these cases the total energy of products formed is less.

#SPJ2