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Calculate the log_(10)of the ratio of the catalysed and uncatalysed rate constants at 25^(@)C. If at this temp. the energy of activation of a catalysed reaction is 162 kJ and for the uncatalysed reaction the value is 350 kJ. (Assume frequency factor is same for both reaction). |
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Answer» `30.94` `log K_("cat".) = log A - (162 xx 10^(3))/(2.303 RT)` …………(i) `log K_("uncat".) = log A - (350 xx 10^(3))/(2.303RT)` ……….(ii) `eq^(N) (i) - eq^(n) (ii)` `log K_("cat".) - log K_("uncat".) = ((350-162)xx10^(3))/(2.303 RT)` `log(K_("cat".))/(K_("uncat".)) = 32.94`. |
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