73 The activation energy of a first order reaction at 300 kelvin is 60 kilojoules per mole .in the presence of a catalyst the activation energy gets lowered to 50 kilojoules per mole at 300 Kelvin. how many times the reaction rate changes in the presence of the catalyst at the same temperature?

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Q. A reaction is carried out at 400 K. If the same reaction is carried out in presence of a catalyst at the same rate, the temperature needed is 300 K. If catalyst lowers the energy of activation by

2 k J m o l^{- 1}

Then the activation energy of the reaction without catalyst is:

Q. The activation energy of the reaction is

75 k J / m o l

in absence of a catalyst and it lowers to

50.14 k J / m o l

with a catalyst. How many times will the rate of reaction grow in presence of a catalyst if the reaction proceeds at

25^{\circ} C

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${log}_{10} (\frac{r_{2}}{r_{1}})$
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$r_{1} = rate in absence of catalyst$

Q. A hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in the presence of a catalyst at the same rate, the temperature required is 400 K. Calculate the activation energy of the catalysed reaction if the catalyst lowers the activation energy barrier by 20 kJ/mol.

Q. A hydrogenation reaction is carried out at

500 K

. If the same reaction is carried out in the presence of a catalyst at the same rate, the temperature required is

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. Calculate the activation energy of the reaction, if the catalyst lowers the activation energy by

20 kJ/mol

(Assume Arrhenius factor to be same during the above temperature change)

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