Question

gases generated in a chemical reaction are sometimes collected by the displacement of water, as shown above. which of the following gases can be quantitatively collected by this method? (a) h₂ (b) co₂ (c) hcl (d) so₂

Explanation:

To collect a gas by water displacement, the gas should not react with water and should be insoluble in water.

• \(H_2\) is insoluble in water and does not react with it.
• \(CO_2\) reacts with water (\(CO_2 + H_2O

ightleftharpoons H_2CO_3\)).

• \(HCl\) is highly soluble in water.
• \(SO_2\) reacts with water (\(SO_2 + H_2O

ightleftharpoons H_2SO_3\)).

Answer:

A. \(H_2\)