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For a reaction taking place in three steps, the rate consatnt are `k_(1),k_(2) and k_(3)`. The oveall constant `k=(k_(1)k_(2))/(k_(3)` . If the energy of activation values of for the first, second and third stage are 40,50 and 60 kJ `"mol"^(-1)` is :A. 30B. 40C. 60D. 50 |
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Answer» Correct Answer - A `k=(k_(1)k_(2))/(k_(3))` `Ae^(-E_(a)//RT)=(Ae^(-E_(a_(1))//RT)xxAe^(-E_(a_(2))//RT))/(Ae^(-E_(a_(3))//RT))` `e^(-E_(a)//RT)=e^((E_(a_(1))-E_(a_(2))+E_(a_(1)))//RT)` `E_(a)=E_(a_(1))+E_(a_(2))-E_(a_(3))` `=40+50-60=30 kJ "mol"^(-1)` |
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