Question

Bronsted-Lowry acid can be a Lewis acid but all Lewis acids cannot be Bronsted-Lowry acid. Explain giving suitable example.

Answer 1

Brønsted–Lowry theory, also called proton theory of acids and bases, a theory, introduced independently in 1923 by the Danish chemist Johannes Nicolaus Brønsted and the English chemist Thomas Martin Lowry, stating that any compound that can transfer a proton to any other compound is an acid, and the compound that accepts the proton is a base. A proton is a nuclear particle with a unit positive electrical charge; it is represented by the symbol H+ because it constitutes the nucleus of a hydrogen atom.

Answer 2

Bronsted-Lowry acid can be a Lewis acid but all Lewis acids cannot be Bronsted-Lowry acid.

This happens because Lewis commented that the Bronsted-Lowry acid only includes the species such as hydrogen.

As per Lewis, an acid is an electron pair is an acceptor.

But Bronsted-Lowry said that an acid is a proton 9 hydrogen ion donor.

Lewis acid accepts electrons while Bronsted-Lowry accepts a pair of electrons.