### Equations

Posted:

**Sat Dec 07, 2019 1:22 pm**Will the equations like pH=-log [H+], Ka=x^2/Ha-x, and etc. be provided on the final?

Created by Dr. Laurence Lavelle

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

https://lavelle.chem.ucla.edu/forum/viewtopic.php?f=60&t=55119

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Posted: **Sat Dec 07, 2019 1:22 pm**

Will the equations like pH=-log [H+], Ka=x^2/Ha-x, and etc. be provided on the final?

Posted: **Sat Dec 07, 2019 1:28 pm**

I believe that the formula sheet for the final should be the same as the other formula sheets provided for the previous exams. It does include the pH=-log[H+] formula, but does not have Ka on it from what I see.

Posted: **Sat Dec 07, 2019 1:30 pm**

the equation sheets from the last test didn't have the formula for Ka but pH was on there

Posted: **Sat Dec 07, 2019 1:31 pm**

Thank you, and also when the equation is pH=-log [H+] it is the same as pH=-log[H3O+]?

Posted: **Sat Dec 07, 2019 1:37 pm**

205192823 wrote:Thank you, and also when the equation is pH=-log [H+] it is the same as pH=-log[H3O+]?

Yes

Posted: **Sat Dec 07, 2019 2:38 pm**

When do you use the Ka and Kb equations...? What's the difference between those and the pH and pOH equations?