Strength of Oxyacids - Achieve HW Q11

[Tavish M 2A]

How do you determine the strength of oxyacids based on their formula?

[chemoyku dis 1B]

Hi!

The amount of oxygen oxyacids have determine how strong an acid is. The more the number of lone oxygens, the stronger the acid would be. This is because the oxygen is slightly negative and it pulls electrons, delocalising electrons through a larger area, stablising the anion formed when H+ is lost. Therefore, this polar bond established makes it easier to lose H+, making the acid stronger.

I hope this helps.

[chemoyku dis 1B]

How do you determine the strength of oxyacids based on their formula?

Hi, in the achieve homework, since the oxygen numbers are the same, you'd look at the halogens.

Electronegativity is significant in labelling an acid weak or strong. HClO would be the most acidic and this is because Cl is the most electronegative central atom, so HClO has the most polarized O–H bond. The lower the central atom is in the halogen groups, the less electronegative it is because it is harder to lose H+ and so the less acidic its oxoacid is. So, HBr would be weaker than HCl and then continues like that.

I hope this helps about the homework.

[Nithya Madhu 2L]

Hey,
For this question you need to compare the halogens since everything else is the same.
The more electronegative the central atom attached to the oxygen is, the more polarized the OH bond will be and the easier it will be to lose the H+, and the more acidic the molecule will be.
In this case Cl is the most electronegative, so the HClO will be the most acidic, then HBrO, and HIO is last.
Hope that helps!