hyrolysis of salt... explaon it
Answers
Salt hydrolysis-
The phenomenon involving interaction of cations or anions ( or both) of a salt with the H+ or OH- ions of water leading to the formation of acidic or alkaline or sometimes even neutral solution is called salt hydrolysis .
The nature of cation or anion of the salt determines the nature of solution which may be acidic or basic . Salts are divided into four categories-
Ex - Hydrolysis of the salt of strong acid and weak base -
The solution of such a salt is acidic in nature . The cation of salt which has come from weak base is reactive . It reacts with water to form weak base and H+ ions.
Thus H+ concentration increases and the solution becomes acidic .
Explanation:
→ Salt is a compound formed by the neutralization reaction between an acid and a base.
→ They generally ionize in water furnishing cations and anions.
→ The cations or anions formed during ionization of salts either exist as hydrated ions in aqueous solutions or interact with water to regenerate the acids and bases.
→ The process of interaction between cations or anions of salts and water is known as hydrolysis of salts.
→ On the basis of hydrolysis, salts are divided into three categories:
- Acidic salts
- Basic salts
- Neutral salts