What range (in volts) does a voltmeter need to have to measure pH in the range of 1 to 14 at 25 °C if the voltage is zero when pH = 7?
Can anyone explain how to approach this problem? I understand why in the solution they used the equation Enaught = RT/nF ln K, but why did they set K = [H+]/[OH-]? Where in the problem does it imply that?
Textbook 6.65
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Savana Maxfield 3F
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Re: Textbook 6.65
I think they set K=[H+]/[OH-] because when the pH is equal to 7, both [H+] and [OH-] are equal to 1.0x10^7M
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ChihWei Chen 2C
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Re: Textbook 6.65
Savana Maxfield 3F wrote:I think they set K=[H+]/[OH-] because when the pH is equal to 7, both [H+] and [OH-] are equal to 1.0x10^7M
Why couldn't it be [OH-]/[H+] though?
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Savana Maxfield 3F
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