12.21

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Jesse_torres2H
Posts: 41
Joined: Thu Jul 27, 2017 3:00 am

12.21

Postby Jesse_torres2H » Fri Dec 08, 2017 12:51 am

Might be a dumb question but in the solutions manual it says Kw=[H3O+][OH-]=1.0*10^-14. Where does this value come from?

Kaylin Krahn 1I
Posts: 57
Joined: Fri Sep 29, 2017 7:04 am
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Re: 12.21

Postby Kaylin Krahn 1I » Fri Dec 08, 2017 10:34 am

It's an equilibrium constant at specifically 25 degrees celsius. Since it's a constant it's always the same number at this temperature.

Jessica Nunez 1I
Posts: 58
Joined: Thu Jul 13, 2017 3:00 am

Re: 12.21

Postby Jessica Nunez 1I » Fri Dec 08, 2017 1:23 pm

In addition, when the pH is 7 (neutral), it implies that [H3O+] is 1.0 x 10^-7 and [OH-] is 1.0 x 10^-7--all which equals 1.0 x 10^-14 when they are multiplied together.


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