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Standard XII
Chemistry
Question

The graph of the effect of catalyst on activation energy is given below. Fill up the blanks X and Y with appropriate statements.
934495_a87b16d936f74341b94e28e0b8b9dec4.png
  1. X= energy of activation without catalyst, Y= energy of activation with catalyst
  2. X= path of reaction with catalyst, Y= path of reaction without catalyst
  3. X= energy of activation with catalyst, Y= energy of activation without catalyst
  4. X= energy of endothermic reaction, Y= energy of exothermic reaction

A
X= energy of activation without catalyst, Y= energy of activation with catalyst
B
X= path of reaction with catalyst, Y= path of reaction without catalyst
C
X= energy of endothermic reaction, Y= energy of exothermic reaction
D
X= energy of activation with catalyst, Y= energy of activation without catalyst
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Solution
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In the presence of a catalyst, the activation energy is reduced between reactant and product. The intermediate is formed faster in presence of catalyst followed by an alternate and short pathway. Hence, X would be energy of activation with catalyst and Y is the energy of activation without the catalyst.

Option C is correct.

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Similar Questions
Q1
The graph of the effect of catalyst on activation energy is given below. Fill up the blanks X and Y with appropriate statements.
934495_a87b16d936f74341b94e28e0b8b9dec4.png
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Q2

Mark the incorrect statements.
(a)Catalyst provides an alternative pathway to reaction mechanism
(b)Catalyst raises the activation energy
(c)Catalyst lowers the activation energy
(d)Catalyst alters enthalpy change of the reaction

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Q3
Catalysts lower the activation energy of a reaction :
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Q4
Statement 1: Catalysts decrease the rate of a chemical reaction.
Statement 2: Catalysts decrease the activation energy.
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Q5
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 2kJmol−1.
Then the activation energy of the reaction without catalyst is:

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