Which of the following statements about catalysts is true?

They increase the value of the equilibrium.

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They increase the amount of product present at equilibrium.

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They increase the concentration of reactants.

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They reduce the activation energy of the reaction.

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Solution

The correct option is D They reduce the activation energy of the reaction.
A substance that increases or deecrease the rate of a chemical reaction without itself undergoing any permanent chemical change is known as catalyst.

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Similar questions

Q. Assertion: Catalysts are substances which increases the amount of product formed in a reaction.
Reason: Catalysts reduce the activation energy of a reaction.

Q. Statement

1

: A catalyst increases the equilibrium of a reaction.
Statement

2

: Catalysts only lower the activation energy of the forward reaction.

Q. Which of the following factors are responsible for the increase in the rate of a surface catalysed reaction?
I. A catalyst provides proper orientation for the reactant molecules to react
II. Heat of adsorption of reactants on a catalyst helps reactant molecules to.overcome activation energy
III. The catalyst increases the activation energy of the reaction
IV. Adsorption increases the local concentration of reactant molecules on the surface of the catalyst
Select the correct answer using the codes given below:

Q. Which of the following factors are responsible for the increase in the rate of a surface catalyzed reaction?
(i) A catalyst provides proper orientation for the reactant molecules to react.
(ii) The heat of adsorption of reactants on a catalyst helps reactant molecules to overcome activation energy.
(iii) The catalyst increases the activation energy of the reaction.

Which of the following statement is not correct for the catalyst?
(a) It catalysts the forward and backward reactions to the same extent
(b) It alters $Δ G$ of the reaction
(c) It is a substance that does not change the equilibrium constant of the reaction
(d) It provides an alternate mechanism by reducing activation energy between reactants and products

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Which of the following statements about catalysts is true?

The correct option is D They reduce the activation energy of the reaction.A substance that increases or deecrease the rate of a chemical reaction without itself undergoing any permanent chemical change is known as catalyst.

The correct option is D They reduce the activation energy of the reaction.
A substance that increases or deecrease the rate of a chemical reaction without itself undergoing any permanent chemical change is known as catalyst.