The activation energy of a certain uncatalysed reaction at 300K is 76 kJ/mol.The activation energy is lowered by 19 kJ/mol by the use of catalyst. By what factor, the rate of catalysed reaction is lowered?

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vikas askiitian expert · Answer

K = Ae -E/RT (E is activation energy) rate(R)= K(a) n (k=rate constant & a is concentration , n is order of reaction) rate directily proportional to rate constant so R 1 /R 2 = K 1 /K 2 = e [-E 1 +E 2 ]/RT =e [-76+19]/RT R 1 /R 2 = e -2.28 (e = 2.8 approx) R 2 = 8R 1

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The activation energy of a certain uncatalysed reaction at 300K is 76 kJ/mol.The activation energy is lowered by 19 kJ/mol by the use of catalyst. By what factor, the rate of catalysed reaction is lowered?

The activation energy of a certain uncatalysed reaction at 300K is 76 kJ/mol.The activation energy is lowered by 19 kJ/mol by the use of catalyst. By what factor, the rate of catalysed reaction is lowered?

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