CameraIcon

SearchIcon

MyQuestionIcon

165

You visited us 165 times! Enjoying our articles? Unlock Full Access!

Arrhenius Equation

A hydrogenati...

Question

A hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in presence of a catalyst at the same rate, the temperature required is 400 K. Calculate the activation energy of the reaction if the catalyst lowers the activation barrier by 20 KJ ${m o l}^{- 1}$ .

Open in App

Solution

we have
$E_{500} = \frac{E_{400}}{4} \times 5 ⟶ 1 a l s o E_{500} = E_{400} + 20 ⟶ 2 e q u a t i n g r i g h t s i d e o f b o t h e q^{n} E_{400} + 20 = \frac{E_{400}}{4} \times 5 (\frac{S}{4} = 1.25) E_{400} + 20 = E_{400} \times 1.25 1.25 E_{400} - E_{400} = 20 0.25 E_{400} = 20 E_{400} = \frac{20}{0.25} = 80 E_{400} = 80 K J m o l s u b s t i t u t e t h i s i n {e q}^{n} 2 E_{500} = E_{400} + 20 = 80 + 20 E_{500} = 100 K J m o l$

Suggest Corrections

thumbs-up

0

Similar questions

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 reaction at 500 K, if the catalyst lowers the activation barrier by

20 k J m o l^{- 1}

.

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 reaction if the catalyst lowers the activation barrier by

20 k J m o l^{- 1}

.
Report your answer as

α

, where activation energy is

100 α k J m o l^{- 1}

.

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

400 K

. 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)

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 reaction at 500 K, if the catalyst lowers the activation barrier by

20 k J m o l^{- 1}

.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Arrhenius Equation

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Arrhenius Equation

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon