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Chapter 8: Problem 6

Which of the following statements is not correct? (a) Catalyst action is specific. (b) A catalyst does not alter the equilibrium. (c) A small amount of catalyst is sufficient to catalyse a reaction. (d) The catalyst initiates the reaction

Short Answer

Expert verified
The incorrect statement is (d) The catalyst initiates the reaction. The catalyst does not initiate the reaction, it only lowers the activation energy, making the reaction faster

Step by step solution

01

Catalyst Action Is Specific

Catalysts are indeed often specific to certain reactions. They provide a different path of minimum energy for the reaction to occur and this path is typically specific to each reaction. So, statement (a) is correct.
02

A Catalyst Does Not Alter The Equilibrium

Catalysts do not change the equilibrium of a reaction, they only speed up the rate at which the equilibrium is reached. Hence, statement (b) is also correct.
03

A Small Amount Of Catalyst Is Sufficient

A small amount of catalyst is usually enough to catalyze a reaction. This is because the catalyst is not consumed in the reaction, allowing it to continue to catalyze the reaction as long as it is present. Therefore, statement (c) is also correct.
04

The Catalyst Initiates The Reaction

The catalyst itself does not initiate the reaction. It only provides a new pathway with lower activation energy for the reaction to occur. The reaction would still take place without the catalyst, just at a slower rate. So, statement (d) is incorrect as the catalyst does not initiate the reaction.

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Most popular questions from this chapter

Which is not an example of homogeneous catalyst? (a) Formation of \(\mathrm{SO}_{3}\) in chamber process (b) Formation of \(\mathrm{SO}_{3}\) contact process (c) Hydrolysis of methyl acetate in the presence of an acid (d) Decomposition of \(\mathrm{KClO}_{3}\) in the presence of \(\mathrm{MnO}_{2}\)

The name catalyst was proposed by (a) Rutherford (b) Langmuir (c) Graham (d) Berzelius

Efficiency of a catalyst depends upon (a) molecular mass (b) room temperature (c) absolute temperature (d) optimum temperature

In the reaction \(\mathrm{KMnO}_{4}+\mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{H}_{2} \mathrm{C}_{2} \mathrm{O}_{4} \rightarrow\) Products, \(\mathrm{Mn}^{2+}\) ions act as a/an (a) positive catalyst (b) negative catalyst (c) auto catalyst (d) enzyme catalyst

A substance which decreases the rate of a reaction is a/an (a) inhibitor (b) poison (c) moderator (d) promoter
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