Question

Bronsted-Lowry acid is :

• A. a proton acceptor
• B. an electron acceptor
• C. an electron donor
• D. a proton donor
  

Answer 1

The correct option is D a proton donor

Bronsted-Lowry acid is a proton donor.
Bronsted-Lowry base is a proton acceptor.
The acid base reactions are proton transfer reactions.
$HCl+N{H}_3\to N{H}_4^{+}+C{l}^{-}$
In the above example, HCl is a proton donor and acts as Bronsted-Lowry acid. Ammonia is a proton acceptor and acts as Bronsted-Lowry base.