Question

Identify the compound which is a Bronsted Lowry base but not an Arrhenius base?

• A. NaOH
• B. KOH
• C. $Cu(OH{)}_2$
• D. $N{H}_3$

Answer 1

The correct option is D

$N{H}_3$

$N{H}_3$ is a Bronsted Lowry base, but not an Arrhenius base. It is because, $N{H}_3$ is a proton acceptor according to Bronsted Lowry theory, but it does not increase the concentration of $O{H}^{-}$ when mixed with water as per Arrhenius theory.