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Define adsorption with an example. What is the role of adsorption in heterogeneous catalysis? |
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Answer» Solution :The accumulation of molecular species at the surface rather than in the bulk of a solid or a liquid is called adsorption. Example: the air becomes dry in the PRESENCE of silica gel because the WATER molecules get adsorbed at the surface of the gel. ROLE of adsorption: Adsorption of reactants on the solid surface of the catalst increases the concentration and the rate of reaction. Manufacture of `NH_3` using iron as CATALYST, manufacture of `H_2SO_4` by Contact Process are some EXAMPLES of heterogeneous catalysis. |
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