## Finding concentration of H30+

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

Jessica Esparza 2H
Posts: 130
Joined: Wed Sep 18, 2019 12:15 am

### Finding concentration of H30+

On homework question 6A.23, it says to calculate the initial molarity of Ba(OH)2 and the molarities of Ba2+, OH-, and H3O+. You can find the first two, which I got 0.05M for OH-. However I don't understand how'd you find the H3O+ concentration. Is there a certain formula you always use? The solutions used something that was Kw/[OH-]. Also is Kw always a constant?