Question

Limitations of Arrhenius concept don't spam I will report ur answers​

Answer 1

Arrhenius theory is known to be the most limited of the three theories since it requires the solutions to be aqueous. It only applies to substances that produce Hydrogen ions (H +) or hydroxide ions (OH −). For example HCL acts as an Arrhenius acid when dissolved in water.

Answer 2

Arrhenius gave a definite concept about acids and bases. According to Arrhenius, an acid is a substance containing hydrogen which produces hydrogen ion (H+) in its aqueous solution, and a base is a substance containing hydroxide which produces hydroxide ion (OH − ) in its aqueous solution.

For example, hydrogen nitrate (nitric acid) produces hydrogen ion in its aqueous solution, and sodium hydroxide produces hydroxide ion in its aqueous solution. This hydrogen nitrate is an acid and sodium hydroxide is a base.

Limitations of Arrhenius theory:

1. It is applicable to aqueous solutions only.

2. It could not explain the basic nature of ammonia in its aqueous solution, as ammonia (NH3 ) does not have the hydroxide ion.

3. An Arrhenius acid is based on the formation of the H+ion. However, it is highly unstable and does not exist independently. It combines immediately with the solvent and forms hydronium ions, i.e. H3O+ .