The hydrolysis constant for the salts of weak base and strong acid is given by:  

CONCEPT:

Hydrolysis Constant for Salts of Weak Base and Strong Acid

• Hydrolysis occurs when salts of weak bases and strong acids dissociate in water, producing ions that react with water to affect the pH.
• The hydrolysis constant (K_h) is the equilibrium constant for this reaction and depends on the dissociation constants of the base and acid.
• The relationship between K_h, K_w, K_a, and K_b is derived from the properties of the weak base and the strong acid.

EXPLANATION:

• For salts derived from a weak base and a strong acid:
  • The cation from the weak base undergoes hydrolysis, producing H⁺ ions.
  • Hydrolysis constant (K_h) is defined as:

    K_h = K_w / K_b

Where:

• K_w is the ionic product of water.
• K_b is the dissociation constant of the weak base.

Therefore, the correct answer is K_w / K_b.