Question

The energy diagram shows the changes in energy during a chemical reaction.

Which statement best describes the total energy change of the system?
Potential energy
M
Reaction progress
O A. The reactants have higher potential energy, and energy is released.
O B. The reactants have lower potential energy, and energy is released.
O C. The reactants have lower potential energy, and energy is
absorbed.
O D. The reactants have higher potential energy, and energy is
absorbed.

Answer 1

There is no diagram attached but there are some ways by which you can find it too easily by yourself

Usually energy diagram uses ∆H .

So

• If ∆H is +ve means reaction is exothermic and energy is released
• If ∆H is -ve means reaction is endothermic and energy is absorbed

So observe∆H whether it. is decreasing or increasing ,

• If increasing then energy is being released and vice versa