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Question

A reaction takes place in three steps; the rate constants are k1,k2 and k3. The overall rate constant k=k1k3k2. If energies of activation are 40,30 and 20 kJ, the overall energy of activation (kJ) is:

A
10
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B
15
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C
30
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D
60
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Solution

The correct option is A 30
k=k1k3k2=e(E1+E3E2)RTEmola=E1+E3E2=30kJmol1

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