Very acidic and Very basic

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Melissa Per 2J
Posts: 32
Joined: Fri Sep 29, 2017 7:04 am

Very acidic and Very basic

Postby Melissa Per 2J » Sun Dec 03, 2017 10:42 pm

How are 1 M H3O+ and 10^-14 M OH- both very acidic and with the same pH of 0? Similarly, how are 1 M of OH- and 10^-14 M H3O+ both very basic and with a pH of 14?

Hannah Guo 3D
Posts: 56
Joined: Fri Sep 29, 2017 7:06 am

Re: Very acidic and Very basic

Postby Hannah Guo 3D » Sun Dec 03, 2017 11:00 pm

Formulas we need:
pH=-log[H+] pOH=-log[OH-] 14=pH+pOH

pH of 1 M H3O+: -log[1]=0
pOH of 10^-14 M OH-: -log[10^-14]=14 pH of 10^-14 M OH-: 14-pOH=0
Both solutions have very low pH values, so they are very acidic

pOH of 1 M of OH-: -log[1]=0 pH of 1 M of OH-: 14-0=14
pH of 10^-14 M H3O+: -log[10^-14]=14
Both solutions have very high pH values, so they are very basic


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