Which one is an example of heterogenous catalysis?
Which one is an example of heterogenous catalysis?
Hydrolysis of sugar catalysed by H+ ions
Decomposition of ozone in-presence of nitrogen monoxide
Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron
Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen
The Correct Option is C
Solution and Explanation
Heterogeneous catalysis refers to a catalytic process where the catalyst exists in a different phase (usually solid) from the reactants and products (usually gas or liquid phases). In option C, the reaction between dinitrogen and dihydrogen to form ammonia is catalyzed by finely divided iron, which is a solid catalyst. The reactants (dinitrogen and dihydrogen) are in the gas phase, while the catalyst (finely divided iron) is in the solid phase, making it an example of heterogeneous catalysis.
The correct option is (C): Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron
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Concepts Used:
Catalysis
All reactants need to overcome certain energy, better known as activation energy in order to form products. This activation energy is the difference between the energy of the transition state and the reactant species.
Types of Catalysis:
Catalysis of chemical reactions is generally divided into two categories:
- Homogeneous Catalysis: Homogeneous catalysis of chemical reactions is a process where the reactants involved in the reaction and the catalyst are in the same phase. For example hydrolysis of sugar in the presence of sulphuric acid.
- Heterogeneous Catalysis: Heterogeneous catalysis of chemical reactions is a process where the reactants involved in the reaction and the catalyst are in different phases. For example reaction of hydrogen and nitrogen in the presence of finely divided iron to form ammonia.