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For the reaction of H 2 with I 2 , the rate constant is 2.5 × 10 –4 dm 3 mol –1 s –1 at 327°C and 1.0 dm 3 mol –1 at 527°C. The activation energy for the reaction, in kJ mole –1 is : (R = 8.314 JK –1 mol –1 )

1. 59
2. 166
3. 72
4. 150

Correct answer: 166

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