### Calculating pH of bases

Posted:

**Sun Dec 01, 2019 6:55 pm**How do you calculate the pH when a problem gives you the concentration of a base?

Created by Dr. Laurence Lavelle

https://lavelle.chem.ucla.edu/forum/

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=60&t=53768

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Posted: **Sun Dec 01, 2019 6:55 pm**

How do you calculate the pH when a problem gives you the concentration of a base?

Posted: **Sun Dec 01, 2019 6:59 pm**

I think you can just find the pOH, which just uses the same equation as finding the pH, and then subtract that value from 14.

Posted: **Sun Dec 01, 2019 7:01 pm**

If you calculate the pOH with the OH- concentration, you can use the equation pH+pOH=14 to solve for pH. I hope this helps!

Posted: **Sun Dec 01, 2019 8:05 pm**

TO find ph, take the negative log of the base concentration (pOH) then subtract that amount from 14 to give you pH.