## Strengths of Acids

Acidity $K_{a}$
Basicity $K_{b}$
The Conjugate Seesaw $K_{a}\times K_{b}=K_{w}$

Alexia Joseph 2B
Posts: 56
Joined: Thu Jul 27, 2017 3:01 am

### Strengths of Acids

Can anyone help explain to me how we are supposed to classify acid strength given something like a group of different acids? I keep reading that for oxoacids, the greater the number of highly electronegative atoms attatched to the central atom, the stronger the acid is, but I don't really understand why. I also don't understand why a stronger acid has greater e- withdrawing power, because doesn't the definition of an acid that we're using in this part mean an acid is an H+ donor?

Jesse_torres2H
Posts: 41
Joined: Thu Jul 27, 2017 3:00 am

### Re: Strengths of Acids

If we have something like HClO2 and HClO the additional O in HClO2 increases the electronegativity and helps to pull the electron in H out of the H-O bond. Hope this helps a little bit.

Ashley Fallon 3C
Posts: 18
Joined: Fri Sep 29, 2017 7:06 am
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### Re: Strengths of Acids

acid strength can be determined by looking at how stable its conjugate base is. If the conjugate base has more EN atoms, then it creates delocalization of electrons and makes it more stable