Strength of acid

[IreneSeo3F]

On sapling #11, can someone explain why HClO is more acidic than HIO? Wouldn't HIO be more acidic because I has greater radius?

[Jordan Tatang 3L]

For that one, you would look at the product and HClO would be stronger because Cl has a greater electronegativity than I so it stabilizes more efficiently.

[Chem_Mod]

These are oxo-acids. The H atom is bonded to the O atom. Same O-H bond in both acids is broken. Need to look at relative stability of anion.

[Malakai Espinosa 3E]

HClO is more acidic because in the anion, Chlorine is more electronegative which stabilizes the anion more.

[Charmaine Ng 2D]

Since Chlorine is more electronegative, it has more electron-withdrawing power, which makes the overall anion more stable.

[705340227]

I believe that if the O wasn't present, then you would be right and the radius would be the defining factor in the acidity

[Ke Huang 2G]

Chlorine is more electronegative.

[Sam Wentzel 1F 14B]

Chlorine has a higher electronegativity, so it pulls H's electron (within the O-H bond) closer to the C, making the H more "available" to be donated, resulting in higher acidity.

[Michelle Magana 2B]

Chlorine has a higher electronegativity and helps stabilizes the anion

[Justin Zhang_1A]

Chlorine is more electronegative than iodine, so the anion is more stable, therefore it is more acidic.

[Izamary Marquez 2H]

Can someone explain how a more stable atom creates a molecule that is more acidic? If it has a higher electronegativity, wouldn't that mean that it holds on to the H+ atoms more strongly, therefore making it harder to release them? Thanks!

[reyvalui_3g]

In oxo acids the stronger acid is the one that has an atom with greater electronegativity. This is because this atom will pull electrons away from the oxygen and make it easier for it to deprotonate in solution.

[Melissa Solis 1H]

Can someone explain how a more stable atom creates a molecule that is more acidic? If it has a higher electronegativity, wouldn't that mean that it holds on to the H+ atoms more strongly, therefore making it harder to release them? Thanks!

In general, the strength of an acid is directly proportional to the stability of the acid's conjugate base. Meaning that an acid that has a more stable conjugate base will be more acidic than an acid that has a less stable conjugate base. You're right on the fact that the higher the electronegativity, the harder it is to get those H+ atoms.

[Marilyn]

The electronegativity of Chlorine is higher.