Answer:
List of the acids from weakest to strongest.
Hydrofluoric Acid is a very weak acid due to the strength of the H-F bond caused by the very small F- anion, also resulting in a large Delta H of Hydration.
Hydrochloric acid is a strong acid (though weaker than Hydrobromic and Hydroiodic acid) as the H-Cl bond is stronger than in those two.
It dissociates fully in solution: HCl -> H+ + Cl-
Nitric Acid is a strong monobasic acid, which dissociates fully in solution.
HNO3 -> H+ + NO3-
Sulfuric acid is a dibasic acid since it can release 2 H+ (protons) to form the SO4 2- anion.
The increased strength of H2SO4 compared to HNO3 accounts for the fact that concentrated H2SO4 and HNO3 work together as a nitrating agent.
H2SO4 + HNO3 -> H2O + NO2+ + HSO4-
The NO2+ is the electrophile which adds onto the aromatic ring.
SOURCE: Chemistry Paper II exam tomorrow..