What acid is stronger sulfuric acid hydrochloric acid hydrofluoric acid or nitric acid?

Answer 1

Trichloroacetic acid is a much stronger acid than acetic because -CCl3 group is strongly electron withdrawing (i.e. removes electron density from the carboxylic acid group). This destabilises the O-H bond and stabilises the ionic form (CCl3CO2- H+) pushing the equilibrium towards the ionised form.

Answer 2

No, in terms of Ka an pKa hydrobromic acid and hydroiodic acid are stronger.

Carborane acid is the world's strongest acid, followed by fluorosulfonic acid. The acidity of carborane acid has been shown at least a million times stronger than concentrated sulfuric acid, and hundreds of times stronger than the previous record holder fluorosulfonic acid.

Answer 3

List of the acids from weakest to strongest.

1) 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.

2) 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-

3) Nitric Acid is a strong monobasic acid, which dissociates fully in solution.

HNO3 -> H+ + NO3-

4) 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.

Answer 4

Sulphuric is stronger because it has a higher acidity constant.

Answer 5

Hydrobromic is stronger, with a pKa of -9 compared to hydrochloric acid's -8.

Answer 6

Trifluoroacetic acid (pKa 0.23) is more stronger than Trichloroacetic acid (pKa 0.77)

Answer 7

Hydrochloric acid.