## Calculating pH and Ionization percentage

janavi_patel_2K
Posts: 20
Joined: Wed Sep 21, 2016 2:59 pm

### Calculating pH and Ionization percentage

On page 156 of the course reader, in the example, it asks to find the pH and the percentage of ionization of acetic acid. However, the work shows finding the concentration of H3O+ and using that value to find the pH and the ionization percentage. Could someone explain why the pH and ionization percentage is found this way?

kara_kremer_2N
Posts: 20
Joined: Fri Jul 15, 2016 3:00 am

### Re: Calculating pH and Ionization percentage

To find the percentage of ionization in acetic acid, you have to find the concentration of H3O+ because you have to see how much acetic acid dissociates (ionizes). By finding this concentration, you know what percentage of acetic acid ionized into H3O+. The pH is -log [H3O+]

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