1.

Differentiate between homogenous and heterogenous catalysis with one example of each .

Answer»

Solution :In the homogenous catalysis , the reactants and the catalyst ara all present in the same phase. But in heterogenous catalysis , these constitute difference phases . For example :
(i) Oxide of nitrogen (NO) acts as homogenous catalyst in the oxidation of `SO_2` to `SO_3` in the contactprocess
` 2SO_2 + O_2 overset(NO_2)(to) 2SO_3`
(II) Nickel (Ni) acts as the heterogenous catalyst in the reaction of steam on METHANE of form carbon monoxide and hydrogen .
`CH_4 + H_2O UNDERSET(1273 K)overset(Ni)(to) underset("steam")(CO + 3H_2) `


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