What is a solution characterised by the ability to resist changes in ph when limited amount of acid or base are added to it

Answer 1

A solution characterised by the ability to resist changes in pH when a limited amount of acid or base is added to it is called a buffer solution. Buffer solutions contain a weak acid and its conjugate base or a weak base and its conjugate acid, which together can neutralize small amounts of added acid or base without significantly changing the solution's pH. Buffer solutions are important in many biological and chemical processes, as they help to maintain a stable pH environment.