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Types of Catalysis

The activatio...

Question

The activation energy of a catalysed reaction is more than the activation energy of the uncatalysed reaction.

A

True

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B

False

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Solution

The correct option is B False
The activation energy of a catalysed reaction is less than the activation energy of the uncatalysed reaction.

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Similar questions

Q. Assertion :The activation energy for an uncatalysed reaction is less than for a catalysed reaction Reason: Negative catalyst increases the activation energy

Q. The diagram illustrates energy changes in activation energy of uncatalysed and enzyme catalysed reaction. Which of the following option represents the lowering of the activation energy?

Q. Consider the following reactions at 300 K: X

\to

Y (uncatalysed reaction) & X

\to

Y (catalysed reaction). The energy of activation is lowered by 83.14 kJmol

^{- 1}

for the catalysed reaction.

The rate of catalysed reaction is:

Q. Calculate the ratio of the catalysed and uncatalysed rate constant at

20^{o} C

if the energy of activation of a catalysed reaction is

20

k J

{m o l}^{- 1}

and for the uncatalysed reaction is

75

k J

{m o l}^{- 1}

Q. An enzyme ‘catalase’ increases the rate of decomposition of

H_{2} O_{2} (a q)

H_{2} O (l)

O_{2} (g)

e^{40}

300 K

. The activation energy of enzyme catalysed reaction is

4.0 k c a l / m o l

. The activation energy of uncatalysed reaction is

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