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Topic: How do I start this pH problem?  (Read 3820 times)

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Offline A5HLEY

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How do I start this pH problem?
« on: March 27, 2008, 02:53:28 PM »
How do I start this pH problem?

A 26.09mL sample of .0621M potassium hydroxide is titrated with .142M perchloric acid solution. Calculate the pH after the following volumes of acid have been added to the original 26.09mL solution.

a). 104.10 mL
b). 113.10 mL
c). 114.00 mL

ANY help is appreciated! Thanks!

Offline Borek

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Offline AWK

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Re: How do I start this pH problem?
« Reply #2 on: March 28, 2008, 02:29:02 AM »
For all these number you have a big excess of HClO4. Do stoichiometry, calculate an excess of HCLO4 in a fonal volume, and calculate pH of an excess of a strong acid

For 260.9 ml and b - 114.1 mL and c - over 114,1 mL
you have problem
a) an excess of NaOH
b) equivalent point
c) excess of HClO4
AWK

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