## How to determine the strength of acids?

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

Alyssa_Hsu_2K
Posts: 55
Joined: Wed Sep 21, 2016 3:00 pm

### How to determine the strength of acids?

Determine which acid in each of the following pairs is stronger and explain why:
1. HF or HCl
2. HClO or HClO2
3. HBrO2 or HClO2
4. HClO4 or H3PO4
5. HNO3 or HNO2
6. H2CO2 or H2GeO3

Thanks!

Ishita_Dubey_2D
Posts: 20
Joined: Wed Sep 21, 2016 3:00 pm

### Re: How to determine the strength of acids?

In general, stronger acids are composed of more electronegative ions and larger ions.

Rebecca_Arnold_3I
Posts: 24
Joined: Wed Sep 21, 2016 3:00 pm

### Re: How to determine the strength of acids?

Also, stronger acids will generally have a greater number of oxygens. For example in number 2- HCl02 will be a stronger acid than HClO.

AngelicaAquino_2I
Posts: 6
Joined: Fri Jul 22, 2016 3:00 am

### Re: How to determine the strength of acids?

In an acid with 2 atoms, the one with a larger atomic radius is more acidic, since it is easier for them to give away that Hydrogen. Also, in acids with more than 2 atoms, look for the one with more Electronegative groups. In general, look for the acid that can give up that H+ easier. Those are more acidic.

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