stronger acid ?

[Christineg1G]

why is HClO2 stronger than HBrO2 ?

[JohannaPerezH2F]

In both acid the oxidation number of chlorine and bromine are same ,that is +3 . But chlorine atom is more electronegative than bromine atom . So the electron of O - H bond strongly attract Cl atom towards itself than bromine atom . ... Consequently , HClO2 is more stroger acid than HBrO2

[Nawal Dandachi 1G]

HClO2 is a stronger acid than HBrO2 because Cl has a higher electronegativity than Br.

[Jessica Tejero 3L]

Usually the stronger acid is the element with the higher electronegativity.

[eve444]

with oxyacids (when everything else is the same except 1 atom), usually, you want to look at electronegativity. this is because the higher the electronegativity is, the more the electrons will be pulled towards that atom, making the resulting acid stronger (H atom is easier to pull off). So in this case, HClO2 would be stronger than HBrO2

[Ginny Ghang 1B]

Since they have the same number of oxygens, you look at the electronegativity of the halogen. The greater the electronegativity of the halogen, the stronger the oxoacid. This is because the electrons are withdrawn slightly from O - H as the element gets more electronegative, making the O - H more polar. This makes the molecule a stronger acid. So HClO2 is stronger.

[Mark_Botros_1D]

Furthermore, to add to the discussion, we are considering electronegativity and not bond length because the hydrogen is bound to the oxygen atom in both acids.

[Evan L 2B]

Cl is more electronegative than Br which means that it allows the h+ ion in the molecule to be lost more easily and therefore make the molecule a stronger acid

[emily3L]

HClO2 is a stronger acid than HBrO2 because Cl is more electronegative than Br because the chlorines pull electron density away from both oxygens, which stabilizes /delocalizes the negative charge.