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Q.

A first order chemical reaction. A ®P is occurring at 500 K. If the same reaction is to be carried out in presence of a catalyst, temperature of 400 K is required to be maintained in order to maintain the same rate of reaction. If the catalyst lowers the activation energy by 30 kJ, then what would be the value of activation energy of the original pathway (uncatalysed reaction)/25.

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answer is 6.

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Detailed Solution

logunncatalysed =logA-Eac500RTlogkcat=logA-Eauc400RTEauc5=Eac44Eauc = 5 EacEauc-Eac=3054Eac−Eac=30Eac=120 kJEauc=150 kJ150÷25=6

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A first order chemical reaction. A ®P is occurring at 500 K. If the same reaction is to be carried out in presence of a catalyst, temperature of 400 K is required to be maintained in order to maintain the same rate of reaction. If the catalyst lowers the activation energy by 30 kJ, then what would be the value of activation energy of the original pathway (uncatalysed reaction)/25.