Answer :
When salts are added to water, the water and salt frequently react to form H3O+ or OH-. We call this a hydrolysis process. The pH value will vary depending on how strongly the ion behaves as an acid or basic. Due to the different salt structures, there are many potential outcomes when water and salts interact. A weak acid and a strong base, a strong acid and a weak base, a strong acid and a strong base, or a weak acid and a weak base can all be used to create salt. The reactants are made up of salt and water, and the products are either conjugate bases (made from the reaction's acid side) or conjugate acids (made from the reaction's base).
When is a salt neutral?
For instance,
Strong bases and acids produce salts that do not hydrolyze. At 7, the pH will stay unchanged. Halides and alkaline metals separate, and they have no effect on the H+ since the cation does not change the H+ and the anion does not draw the H+ from water. NaCl serves as a neutral salt as a result. In general, spectator ions will form when salts with halides—aside from F-—and an alkaline metal—aside from Be2+—dissociate.
Strong bases and weak acids in salts do hydrolyze, raising the pH level over 7. The anion in the salt is produced from a weak acid, probably organic, and will receive the proton from the water during the reaction.
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