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Author Topic: Buffer question  (Read 3527 times)

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gidget

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Buffer question
« on: March 27, 2009, 06:44:39 AM »

Our professor gave us some questions to look at about buffers in preparation for a quiz and I'm stuck on how to solve this:

What is the pH of the buffer formed by adding 100mL of 0.150M KHP to
a) 100mL of 0.0800M NaOH
b) 100mL of 0.0800M HCl

Thanks in advance for you *delete me*
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Borek

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Re: Buffer question
« Reply #1 on: March 27, 2009, 08:29:41 AM »

Do you know any equations describing buffer pH?
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gidget

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Re: Buffer question
« Reply #2 on: March 27, 2009, 08:37:08 AM »

the only thing i can think of to do is to use pH=pKa + log [A]/[HA] but we arent given the ka
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Borek

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Re: Buffer question
« Reply #3 on: March 27, 2009, 11:35:18 AM »

So you have to look it up. No other way of solving the question.
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