If a reaction, A+B⟶C, is exothermic to the extent of 30kJ/mol and the forward reaction has an activation energy of 249kJ/mol, the activation energy for reverse reaction in kJ/mol is:
A
324
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B
279
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C
40
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D
100
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Solution
The correct option is B279
Given that ΔH=−30 kJ/mol......[exothermic reaction]