Question

Write the reaction of ammonia and water. Label the acid, base, conjugate acid and conjugate base.

Is Ammonia a weak or strong base?

Answer 1

Explanation :

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor.

The equilibrium reaction will be,

$NH_3+H_2O\rightleftharpoons NH_4^++OH^-$

In this reaction, $NH_3$ and $H_2O$ are base and acid and $NH_4^+$ and $OH^-$ are conjugate acid and conjugate base respectively.

Ammonia is a weak base because it accept proton from the water and gives fewer hydroxide ions.