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Questions
What is the difference between homogeneous and heterogeneous catalysis?
Differentiate between homogeneous and heterogeneous catalysis.
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Solution
| Sr. No. | Homogeneous catalysis | Heterogeneous catalysis |
| 1. | In a catalysed reaction the reactants, products and catalyst are present in the same phase. | In a reaction, the catalyst is present in a different phase. i.e., the catalyst is not present in the same phase as that of reactants and products. |
| 2. | For example, \[\ce{2SO2_{(g)} + O2_{(g)} ->[NO_{(g)}] 2SO3_{(g)}}\] Hence NO act as catalyst. | For example, \[\ce{2SO2_{(g)} + O2_{(g)} ->[Pt_{(s)}] 2SO3_{(g)}}\] Hence Pt(s) act as catalyst. |
| 3. | Homogeneous catalysis is explained by intermediate compound formation theory. | Heterogeneous catalysis is explained by adsorption theory. |
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| List - I | List - II | ||
| (Processes/Reactions) | (Catalyst) | ||
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| Catalysts | Process | ||
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