Which one is an example of heterogenous catalysis?
Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen
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
In heterogeneous catalysis, the catalyst is in a different phase from the reactants. In the Haber process (option D), the reactants (N and H gases) are in the gas phase, while the catalyst (iron) is a solid. The other options involve homogeneous catalysis where the catalyst and reactants are in the same phase.
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