Question

For a reversible reaction where the forward reaction is exothermic, which of the following statements is correct?

• A. The backward reaction has higher activation energy than the forward reaction.
• B. The backward and the forward processes have same activation energy.
• C. The backward reaction has lower activation energy.
• D. No activation energy is required at all since energy is liberated in the process.

Answer 1

The correct option is A The backward reaction has higher activation energy than the forward reaction.

If forward reaction is exothermic it means than higher energy is released during forward reaction which implies than it is easy to bring reaction forward. So, forward reaction has lower activation energy than backward reaction