Limitations of Henry’s law

Limitations of Henry’s law

i. Henry’s law is applicable at moderate temperature and pressure only.

ii. Only the less soluble gases obeys Henry’s law

iii. The gases reacting with the solvent do not obey Henry’s law. For example, ammonia or HCl reacts with water and hence does not obey this law.

NH3+ H2O â‡† NH4+ + OH–

iv. The gases obeying Henry’s law should not associate or dissociate while dissolving in the solvent.