For a ammonium chloride solution in water, the given equilibrium reaction occur:
NH+4 (aq)+H2O (l)hydrolysis⇌NH4OH (aq)+H+ (aq)
Which of the following describes correct relation ?
NH+4(aq)+H2O(l)⇌NH4OH(aq)+H+(aq)
C 0 0 C−Ch Ch Ch
In this reaction the (Kh) hydrolysis constant is:
Kh=[NH4OH][H+][NH+4]=(Ch)2C(1−h)
NH4OH(aq)⇌NH+4(aq)+OH−(aq)
In this reaction the Kb constant is:
Kb=[NH+4][OH−][NH4OH]
H2O(l)⇌H+(aq)+OH−(aq)
In this reaction the Kw constant is:
Kw=[H+][OH−]
Using he value of Kb and Kw we can derive the value of Kh
∴ KwKb=[H+][OH−][NH4][OH−][NH4OH]
KwKb=[NH4OH][H+]NH+4
Kh=KwKb