Why HClO2 is a stronger acid than HBrO2?

[Chem_Mod]

HClO2 is a stronger acid than HBrO2. Doesn't the fact that Cl and Br are in the same group and the Br-O bond is longer and weaker than the Cl-O bond outweigh the greater electronegativity of the Cl bond though?

[Chem_Mod]

It's the O--H bond that is broken. Also the resulting ClO2- is more stable due to Cl's higher electronegativity.

[Joussie Camacho 4I]

Is this true every time there's an O2 in an acid? The hydrogen will be bound to one oxygen?

[Rami_Z_AbuQubo_2K]

Since there is an equal amount of oxygens, you look at which is more electronegative (Br or Cl) and since Cl is more electronegative, it is the stronger acid.

[Alli Hinmon 3E]

HBrO2 I believe is actually stronger because the O will pull the Br away from the H more so then the O will pull the Cl away from the H. Always the more electro neg atom is the strongest acid.

[604656370]

Does this apply to HNO3 and HNO2 as well? I said HNO3 is stronger because the extra oygen in the molecule helps stabilize the charge from the lone pair.

[Josceline 3J]

I honestly thought this was related to the electronegativity of the element. Thanks for all the help.