Question

How can you decide a salt as a basic salt or acidic salt or neutral salt? Give some examples

Answer 1

Basic salt
A basic salt is formed between a weak acid and a strong base. The basicity is due to the hydrolysis of the conjugate base of the (weak) acid used in the neutralization reaction. For example, sodium acetate formed between the weak acetic acid and the strong base NaOH is a basic salt. When the salt is dissolved, ionization takes place: NaAc = Na+ + Ac- In the presence of water, Ac^- undergo hydrolysis: H2O + Ac- = HAc + OH- Acidic salt
salt formed between a strong acid and a weak base is an acid salt. Ammonia is a weak base, and its salt with any strong acid gives a solution with a pH lower than 7. For example, let us consider the reaction: HCl + NH4OH = NH4+ + Cl- + H2O In the solution, the NH₄⁺ ion reacts with water (called hydrolysis) according to the equation: NH4+ + H2O = NH3 + H3O+. neutral salt
A salt is formed between the reaction of an acid and a base. Usually, a neutral salt is formed when a strong acid and a strong base is neutralized in the reaction: H+ + OH- = H2O