SO₃ is not directly dissolved in water in the industrial preparation of H₂SO₄ by the contact process because

Correct Answer is : The reaction between SO3₃3 and water is violently exothermic

Acid is usually added to water and not water to acid

The reaction between SO₃ and water is violently exothermic

SO₃ does not dissolve readily in water

SO₃ is not directly dissolved in water in the industrial preparation of H₂SO₄ by the contact process because

Correct Answer is : The reaction between SO3₃3 and water is violently exothermic

Test Index

JAMB Chemistry 2019 Paper

Question : 16

Total: 80

_3

is not directly dissolved in water in the industrial preparation of H

_2

_4

by the contact process because

SO $_3$ is an acidic gas
Acid is usually added to water and not water to acid
The reaction between SO $_3$ and water is violently exothermic
SO $_3$ does not dissolve readily in water

Validate

Solution:

Concept:

Direct dissolution of

\mathrm{SO}_3

in water is avoided due to the dangerous heat released.

Explanation:

During the contact process,

\mathrm{SO}_3

is absorbed in concentrated

\mathrm{H}_2\mathrm{SO}_4

to form oleum, which is then diluted with water.

\mathrm{SO}_3

were dissolved directly in water, the reaction would be violently exothermic, producing a corrosive acid mist that is difficult to condense and handle.

Answer:

C. The reaction between

\mathrm{SO}_3

and water is violently exothermic.

Go to Question:

Prev Question

Next Question