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A reaction is carried out at `600 K`. If the same reaction is carried out in the presence of catalyst at the same rate and same frequency factor, the temperature required is `500 K`. What is the activation energy of the reaction, if the catalyst lowers the activation energy barrier by `20 KJ//mol` ?A. 100B. 120C. 80D. None of these |
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Answer» Correct Answer - B `k = Ae^(- Ea//R xx 600)` `k^(c ) = Ae^((Ea - 20)/(R - 500))` `k = k^(c )` `(Ea)/(R xx 600) = ((Ea - 20))/(R xx 500)` `(Ea)/(6) = (Ea - 20)/(5)` `20 = Ea - (5)/(6)Ea` `Ea = 20 xx 6` `Ea = 120 KJ//mol` |
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