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प्रश्न
How does a solid catalyst enhance the rate of combination of gaseous molecules?
उत्तर
When gaseous molecules come in contact with the surface of a solid catalyst, a weak chemical combination takes place between the surface of the catalyst and the gaseous molecules takes places, which increases the concentration of reactants on the surface. Different moelcules adsorbed side by side have better chance to react and form new molecules. This enhances the rate of reaction. Also, adsorption is an exothermic process. The heat released in the process of adsorption is utilised in enhancing the reaction rate.
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संबंधित प्रश्न
Which of the following is obtained by catalytic oxidation of ammonia?
Gaseous CO and gaseous H2 react with each other in presence of catalyst 'X' to form methane and water. 'X' is ____________.
Identify the enzyme 'X' in the following reaction.
\[\ce{H2O2_{(aq)} ->[X] H2O2_{(l)} + 1/2O2_{(g)}}\]
Substance that enhances the activity of a catalyst is known as ____________.
Which of the following process does not occur at the interface of phases?
Which of the following statements are correct about solid catalyst?
(i) Same reactants may give different product by using different catalysts.
(ii) Catalyst does not change ∆H of reaction.
(iii) Catalyst is required in large quantities to catalyse reactions.
(iv) Catalytic activity of a solid catalyst does not depend upon the strength of chemisorption.
Why is desorption important for a substance to act as good catalyst?
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What do you understand by shape selective catalysis? Why are zeolites good shape selective catalysts?
What is/are the feature/s about microcosmic salt is correct?
