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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 ______.
Options
100
130
50
103
MCQ
Fill in the Blanks
Solution
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 = (Ea)f - (Ea)b
- 20 = 30 - (Ea)b
⇒ (Ea)b = 50 kJ
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