[H3O+] > 10-7

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Emily Glaser 1F
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Joined: Thu Jul 27, 2017 3:01 am

[H3O+] > 10-7

Postby Emily Glaser 1F » Fri Dec 08, 2017 11:37 pm

Can someone explain to me what this means that was said in lecture today:

"If [H3O+] < 10-7, then it is considered neutral because we now autoprotlysis generates 10-7 mol/l H3O+"

GabrielGarciaDiscussion1i
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Re: [H3O+] > 10-7

Postby GabrielGarciaDiscussion1i » Fri Dec 08, 2017 11:45 pm

It means that if an extremely weak acid contributes a concentration of [H30+] < 10^-7, then the compound is still considered ESSENTIALLY neutral because with water autoprotolysis, the [H30+] is 10^-7 and then adding 10^-12 is so insignificant that the [H30+] is still essentially the same.

Juanalv326
Posts: 49
Joined: Fri Sep 29, 2017 7:04 am

Re: [H3O+] > 10-7

Postby Juanalv326 » Sat Dec 09, 2017 12:23 am

Another way of saying it is that -logpH=10^(-pH), so because you saw that the 10^ is (-7) it means that the pH is 7


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