Understanding Salt Hydrolysis in Chemistry

Salt hydrolysis is a chemical process in which a salt reacts with water to produce an acid and a base. This reaction occurs when the cation or anion of the salt interacts with water, resulting in either an acidic or basic solution. The type of hydrolysis depends on the strength of the acid and base produced. Cationic hydrolysis happens when the cation forms an acidic solution, while anionic hydrolysis results in a basic solution. This process is essential in understanding the properties of different salts in aqueous solutions.

• Salt hydrolysis
• Chemistry
• Acid
• Base
• Cation
• Anion

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1. Salt Hydrolysis Mr. K. K. Ahmed Department of Chemistry Haflong Govt. College, Haflong.

2. Definition Salt hydrolysis may be defined as the process in which a salt reacts with water to give back the acid and the base. Salt + water Acid +Base Or, BA + H2O HA + BOH Salt Water Acid Base

3. All salts are electrolytes and thus ionize completely in aqueous solution. If the acid (HA) produced is strong and the base (BOH) produced is weak, we can write the above equation as B++ A-+ H2O H++ A-+ BOH B++ H2O H++ BOH Or, Thus in this case the cation reacts with water to give an acidic solution. This is called cationic hydrolysis.

4. Again, if the acid produced is weak and the base produced is strong, we can write B++ A-+ H2O HA + B++ OH- A-+ H2O HA + OH- Or, Here, the anion reacts with water to give the basic solution. This is called anionic hydrolysis.

5. Hence, salt hydrolysis may be defined as the reaction of the cation or the anion of the salt with water to produce acidic or basic solution.

6. Thank You