The Student Room Group

simple a2 chemistry question

why are aqueous solutions of sodium ethanoate slighty alkaline?

many thanks :smile:
Reply 1
This is because the ethanoate ions will interact with the water to remove the hydrogen ions (H+). The ethanoic acid formed in the equilbrium is a very weak acid and hence only partially dissociates, pulling the equilibrium to the RIGHT HAND SIDE of the equation.

CH3COO- + H2O <==> CH3COOH + OH-

Therefore, the sodium ethanoate is said to be akaline by hydrolysis (the chemical breakdown of a compound due to reaction with water).
Reply 2
In other words, ethanoate is a quite a strong Bronsted-Lowry base.

Quick Reply

Latest