Question

Write a reaction which for dissociation of a basic substance in water which can be considered a Bronsted-Lowry base, but NOT an Arrhenius base.

Answer 1

Ammonia is a Bronsted - Lowry base but NOT an Arrhenius base

NH₃(aq) + H₂O(l) <-------> NH₄⁺(aq) + OH^- (aq)

according to Bronsted - Lowry acid - base concept , an base is a substance which accept H⁺ ion and according to Arrhenius acid - base concept base is a substance which give OH^-.

In the above reaction NH₃ accept H⁺ from water to give OH^- , so NH3 is a Bronsted - Lowry base