calculating pH

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Giovanni Anguiano-Gutierrez 3L
Posts: 52
Joined: Thu Jul 25, 2019 12:17 am

calculating pH

Postby Giovanni Anguiano-Gutierrez 3L » Tue Dec 03, 2019 3:27 pm

how do you calculate pH when given the moles?

Lauren Bui 1E
Posts: 54
Joined: Sat Jul 20, 2019 12:15 am

Re: calculating pH

Postby Lauren Bui 1E » Tue Dec 03, 2019 3:38 pm

first convert the moles of the solution into moles of H+ or OH- depending on if it is an acid or base, respectively, using the molar ratios. then find the molarity of the solution. plug the molarity into pOH = -log[OH-] or pH = -log[H+]
if it is a base, you will need to subtract to get pH: 14-pOH = pH

Sukanya Mohapatra 2G
Posts: 100
Joined: Sat Aug 17, 2019 12:18 am
Been upvoted: 1 time

Re: calculating pH

Postby Sukanya Mohapatra 2G » Tue Dec 03, 2019 10:49 pm

Find the molarity and then plug into the pH equation.

Arianna Perea 3H
Posts: 50
Joined: Thu Jul 25, 2019 12:17 am

Re: calculating pH

Postby Arianna Perea 3H » Thu Dec 05, 2019 12:52 pm

will we only have to calculate problems for strong acid/bases or weak ones as well for the final?

Fiona Latifi 1A
Posts: 102
Joined: Sat Sep 14, 2019 12:16 am

Re: calculating pH

Postby Fiona Latifi 1A » Thu Dec 05, 2019 12:54 pm

Arianna Perea 3H wrote:will we only have to calculate problems for strong acid/bases or weak ones as well for the final?


Only strong acids or bases


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