Which of the following is not an example of a heterogeneous catalysis?

Formation of

S O_{3}

In the chamber process.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Formation of

S O_{3}

in the contact process.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Hydrolysis of an ester in the presence of

H^{+}

ions.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Combination of

H_{2}

and

C l_{2}

in the presence of moisture.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct options are
A Formation of $S O_{3}$ In the chamber process.
C Hydrolysis of an ester in the presence of $H^{+}$ ions.
D Combination of $H_{2}$ and $C l_{2}$ in the presence of moisture.
Heterogeneous catalysis refers to the form of catalysis where the phase of the catalyst differs from that of the reactants. Phase here refers not only to solid, liquid vs gas but also immiscible liquids.
In acidic hydrolysis, reactants and catalyst ( $H^{+}$ ), both are miscible liquids and therefore, is homogeneous catalysis.
Combination of $H_{2}$ and $C l_{2}$ in the presence of moisture, here reactant and catalyst both are gaseous.
Formation of $S O_{3}$ in the contact process, here air is used as catalyst.
In this method, sulphur dioxide made by either burning sulphur in excess of air or by roasting of sulphide ores.

Suggest Corrections