Why is hi a stronger acid than HCl?

[purplerabbit549]

Originally Answered: Why HI is more acidic than HCl cause as per fajan's rule HI is more Covalent than HCl? The strength of any acid is determined by the stability of it's conjugate anion. Since negative charge is more stabilised incase of hydrogen iodide, so it is a strong acid.

[yellowcat832]

The same reasoning applies for both HBr and HI. These acids are even stronger than HCl because the Br– and I– ions are even larger. As such, the H-Br and H-I bonds are even weaker, and these compounds also readily dissociate in solution.

Subsequently, question is, is sulfuric acid stronger than HCl? In chemistry, both HCl and H2SO4 are strong acids. But what makes the HCl is stronger than H2SO4 is the difference in Basicity of both acids. In contrast, the HCl is monoprotic acid whereas, the H2SO4 is Diprotic acid. Hence,the number of H ions produced by H2SO4 is higher and easily replace with other compounds.

Beside above, why is hi stronger than HCl in acetic acid?

HI and HCl are not stronger than CH3COOH2 , the conjugate acid of acetic acid. HI dissapates more than HCl in acetic acid because the anion I -1 is larger than Cl -1. This makes it possible for more acetic acid molecules to attach to I -1 than Cl -1. This is why HI is stronger than HCl in acetic acid.

Is HCl or HBr stronger?

HBr fumes strongly in moist air. It is one of the strongest mineral acids, with a reducing action stronger than that of hydrogen chloride (HCl). It is extremely soluble in water, forming a strong acid that is available as 48 or 68% solutions.