Name two groups in which the phenomenon of catalysis can be divided. Give one example of each group with chemical equation.

Explanation

In the same phase of the reactantsis mentioned as homogenous catalyst.Example of this catalyst is the extraction of methyl acetate from the acetic acid
`2SO_(2) (g) + O_(2)(g) overset(NO(g))rarr2SO_(3)(g)`
oxidation of Sulphur dioxide into tri-oxide with dioxygen in presence of oxides of nitrogen as the catalyst in the in lead chamber process.
Heterogenous catalysis : This catalyst provides a medium for the performance of the reactions. Heterogenous catalysis is defined as the catalytic process in which the reactants catalysis are in different phases e.g.
`2SO_(2)(g) overset(Pt(s))rarr 2SO_(3)(g)`
Oxidation of sulphur trioxide from sulphur dioxide in the presence of Pt.