## Acid Deprotonation

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

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### Acid Deprotonation

Why does the acid deprotonate when the pka<pH?

Kiran Singh 3A
Posts: 90
Joined: Wed Sep 30, 2020 9:41 pm

### Re: Acid Deprotonation

If the pKA value is lower, meaning the KA value is higher, the acid is stronger (if pKA<pH). A stronger acid is almost completely ionized in water, so it will deprotonate. On the other hand, if the pKA value is higher, meaning the KA value is lower, the acid is weaker. A weaker acid does not completely ionize in water, so it will be protonated (keep its H). Hope this helps.