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Topic: [H+] problem please help  (Read 6426 times)

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Offline RydbergConstant

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[H+] problem please help
« on: March 06, 2008, 10:16:20 PM »
a solution in which [OH-] is 140 times greater than [H+]:

What is [H+]?
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Offline Arkcon

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Re: [H+] problem please help
« Reply #1 on: March 06, 2008, 10:20:46 PM »
Quote from: RydbergConstant on March 06, 2008, 10:16:20 PM
a solution in which [OH-] is 140 times greater than [H+]:

What is [H+]?

The definition of pH and pOH is, what?  pH = ... ?
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Hey, I'm not judging.  I just like to shoot straight.  I'm a man of science.

Offline RydbergConstant

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Re: [H+] problem please help
« Reply #2 on: March 06, 2008, 10:25:46 PM »
the question asks what is the concentration of hydronium ions which is pH remember [OH-] is pOH and [H+] is pH
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Offline Padfoot

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Re: [H+] problem please help
« Reply #3 on: March 07, 2008, 12:56:19 AM »
Remember that
pH+pOH=14
or
[H+][OH-]=10-14
http://en.wikipedia.org/wiki/Self-ionization_of_water

Can you do the algebra to solve?
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Offline AWK

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Re: [H+] problem please help
« Reply #4 on: March 07, 2008, 01:01:59 AM »
The problem has nothing with pH and pOH directly. This is a simple equation:
[H3O+] x 140 x [H3O+] = 10-14
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AWK
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