Write the chemical reaction that is responsible for the ph of a buffer which contains nh3 and nh4cl. write the reaction in such a way that is appropriate for a ka.

Ammonia (NH₃) shows basic character in aqueous solution:

NH₃ + H₂O ⇄ NH₄⁺ + OH⁻. This is basic buffer, because contains hydroxide anions.

Ammonium chloride is salt and in water dissociate:

NH₄Cl → NH₄⁺ + Cl⁻.

Ammonium ion shows acidic character in aqueous solution::

NH₄⁺ + H₂O ⇄ NH₃ + H₃O⁺.

Ka = [NH₃] · [H₃O⁺] : [NH₄⁺].