Question

What kind of an acid/base is a proton donor?

• A. Arrhenius base
• B. Bronsted acid
• C. Lewis acid
• D. Lewis base

Answer 1

The correct option is B Bronsted acid

Arrhenius bases are $O{H}^{-}$ ion donors in aqueous solution.

Lewis acids are electron acceptors.

Lewis bases are electron donors.

According to Bronsted - Lowry theory, proton donors are acids.

$\therefore$ Proton donor is Bronsted Acid.

Hence, option $B$ is correct.