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According to the adsorption theory of catalysis, the speed of the reaction increases because
- a)in the process of adsorption, the activation energy of the molecules becomes large.
- b)adsorption produces heat which increases the speed of the reaction.
- c)adsorption lowers the activation energy of the reaction.
- d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
According to the adsorption theory of catalysis, the speed of the rea...
Adsorption theory of catalysis
The adsorption theory of catalysis explains how catalysts increase the speed of a chemical reaction by providing an alternative reaction pathway with lower activation energy. According to this theory, the reactant molecules are adsorbed onto the surface of the catalyst, where they undergo chemical reactions and are subsequently desorbed as product molecules.
Explanation of the correct answer (option C)
Adsorption lowers the activation energy of the reaction.
When reactant molecules are adsorbed onto the surface of a catalyst, they experience a decrease in the activation energy required for the reaction to occur. This is due to several factors:
1. Increased reactant concentration: Adsorption brings the reactant molecules into close proximity with each other, increasing their effective concentration at the active sites of the catalyst. This higher concentration promotes more frequent and successful collisions between reactant molecules, leading to an increased reaction rate.
2. Enhanced reactant orientation: Adsorption allows the reactant molecules to align in a favorable orientation on the catalyst surface, which facilitates the breaking and formation of chemical bonds during the reaction. This proper orientation reduces the energy barrier (activation energy) required for the reaction to proceed.
3. Electronic and geometric effects: The surface of the catalyst can provide additional electronic or geometric effects that stabilize the transition state of the reaction. This stabilization reduces the energy required to reach the transition state and subsequently lowers the activation energy.
4. Adsorbate-catalyst interactions: The adsorption process itself involves attractive interactions between the adsorbate (reactant molecules) and the catalyst surface. These interactions can modify the electronic properties of the adsorbate, making it more reactive and lowering the activation energy.
Overall, adsorption plays a crucial role in catalysis by reducing the activation energy of a reaction. This allows reactant molecules to overcome the energy barrier more easily, leading to an accelerated reaction rate.
The adsorption theory of catalysis explains how catalysts increase the speed of a chemical reaction by providing an alternative reaction pathway with lower activation energy. According to this theory, the reactant molecules are adsorbed onto the surface of the catalyst, where they undergo chemical reactions and are subsequently desorbed as product molecules.
Explanation of the correct answer (option C)
Adsorption lowers the activation energy of the reaction.
When reactant molecules are adsorbed onto the surface of a catalyst, they experience a decrease in the activation energy required for the reaction to occur. This is due to several factors:
1. Increased reactant concentration: Adsorption brings the reactant molecules into close proximity with each other, increasing their effective concentration at the active sites of the catalyst. This higher concentration promotes more frequent and successful collisions between reactant molecules, leading to an increased reaction rate.
2. Enhanced reactant orientation: Adsorption allows the reactant molecules to align in a favorable orientation on the catalyst surface, which facilitates the breaking and formation of chemical bonds during the reaction. This proper orientation reduces the energy barrier (activation energy) required for the reaction to proceed.
3. Electronic and geometric effects: The surface of the catalyst can provide additional electronic or geometric effects that stabilize the transition state of the reaction. This stabilization reduces the energy required to reach the transition state and subsequently lowers the activation energy.
4. Adsorbate-catalyst interactions: The adsorption process itself involves attractive interactions between the adsorbate (reactant molecules) and the catalyst surface. These interactions can modify the electronic properties of the adsorbate, making it more reactive and lowering the activation energy.
Overall, adsorption plays a crucial role in catalysis by reducing the activation energy of a reaction. This allows reactant molecules to overcome the energy barrier more easily, leading to an accelerated reaction rate.
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According to the adsorption theory of catalysis, the speed of the rea...
Adsorption lowers the activation energy.
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According to the adsorption theory of catalysis, the speed of the reaction increases becausea)in the process of adsorption, the activation energy of the molecules becomes large.b)adsorption produces heat which increases the speed of the reaction.c)adsorption lowers the activation energy of the reaction.d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.Correct answer is option 'C'. Can you explain this answer?
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According to the adsorption theory of catalysis, the speed of the reaction increases becausea)in the process of adsorption, the activation energy of the molecules becomes large.b)adsorption produces heat which increases the speed of the reaction.c)adsorption lowers the activation energy of the reaction.d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about According to the adsorption theory of catalysis, the speed of the reaction increases becausea)in the process of adsorption, the activation energy of the molecules becomes large.b)adsorption produces heat which increases the speed of the reaction.c)adsorption lowers the activation energy of the reaction.d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to the adsorption theory of catalysis, the speed of the reaction increases becausea)in the process of adsorption, the activation energy of the molecules becomes large.b)adsorption produces heat which increases the speed of the reaction.c)adsorption lowers the activation energy of the reaction.d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.Correct answer is option 'C'. Can you explain this answer?.
According to the adsorption theory of catalysis, the speed of the reaction increases becausea)in the process of adsorption, the activation energy of the molecules becomes large.b)adsorption produces heat which increases the speed of the reaction.c)adsorption lowers the activation energy of the reaction.d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.Correct answer is option 'C'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about According to the adsorption theory of catalysis, the speed of the reaction increases becausea)in the process of adsorption, the activation energy of the molecules becomes large.b)adsorption produces heat which increases the speed of the reaction.c)adsorption lowers the activation energy of the reaction.d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for According to the adsorption theory of catalysis, the speed of the reaction increases becausea)in the process of adsorption, the activation energy of the molecules becomes large.b)adsorption produces heat which increases the speed of the reaction.c)adsorption lowers the activation energy of the reaction.d)the concentration of product molecules at the active centres of the catalyst becomes high due to adsorption.Correct answer is option 'C'. Can you explain this answer?.
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