Friday
April 18, 2014

Homework Help: analytical chemistry

Posted by smiley on Saturday, September 22, 2007 at 10:25am.

"experiment: spectrophotometric determination of the acid dissociation constant of methyl red"
1. Why is pH plotted against log([MR-]/[HMR]) to get the pKa of methyl red?
2. Why is it right that HMR has a pH equal to 2 and MR- to have a pH equal to 8?

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