Question

An exothermic reaction X → Y has an activation energy 30 kJ mol^-1. If energy change ΔE during the reaction is - 20 kJ, then the activation energy for the reverse reaction in kJ is ______.

विकल्प

• 100

• 130

• 50

• 103

Answer 1

An exothermic reaction X→Y has an activation energy 30 kJ mol^-1. If energy change ΔE during the reaction is - 20 kJ, then the activation energy for the reverse reaction in kJ is 50.

Explanation:

X→Y

ΔE = (E_a)_f - (E_a)_b 

- 20 = 30 - (E_a)_b 

⇒ (E_a)_b = 50 kJ