Question

Which of the following definitions of acids and bases focuses on the transfer of the H+ particle?

I. Arrhenius
II. Brønsted -Lowry
III. Lewis


I and II

I and III

II and III

I, II and III

Answer 1

Answer : The correct option is, I and II

Explanation :

According to the Arrhenius theory, an acid is a substance that ionizes in the water to give hydronium ion
`(H_3O^+)` or hydrogen ion
`(H^+)` and a bases is a substance that ionizes in the water to give hydroxide ion
`(OH^-)`.

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

According to the Lewis acid-base theory, an acid is a sustenance that accepts pairs of electrons and the a base is a substance that donates pairs of electrons.

As per question, the Arrhenius and Bronsted Lowry are the definitions of acids and bases that focuses on the transfer of the
`H^+` hydrogen particles.

Hence, the correct option is, I and II

Answer 2

Answer;

I and II

Explanation;

• Arrhenius definition of acid and bases involves adding an H+ or OH- to one side of the equation, while bronsted-lowery definition involves transfer of protons.
• Arrhenius acid is any substances that increases the concentration of hydronium ions (H3O+) in solution.
• Brønsted-Lowry acid is any substance that can act as a proton donor.
• Lewis acid is any substance that can accept a pair of electrons.