Grade 11Physical Chemistry
hydrolysis constant
hydrolysis constant
1 Answer
Naveen Kumar
The salts made up of weak acid or weaak base or both when dissocated partially, then its conjugate further reacts with water and this process is called hydrolysis.
For example, let a salt made up of weak acid(CH3COOH) and strong base(NaOH)
AB..<.........> B-..........+......A+
….(CH3COONa)<.........>CH3COO-.+....Na+
B-....+H2O<,...........>.BH …..+..........OH-
For this equilibrium(bold), the equilibrium constant Kh=[BH][OH-]/[B-]
is called hydrolysis constant.
For example, let a salt made up of weak acid(CH3COOH) and strong base(NaOH)
AB..<.........> B-..........+......A+
….(CH3COONa)<.........>CH3COO-.+....Na+
B-....+H2O<,...........>.BH …..+..........OH-
For this equilibrium(bold), the equilibrium constant Kh=[BH][OH-]/[B-]
is called hydrolysis constant.
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