Determine Pka Methyl Red

PROJECT FINAL REPORT COVER PAGE theme human activity: W4 PROJEC TITLE: The Dependence of Methyl blushing(a) Molar extinguishing Coefficient on the pH DATE SUBMITTED: 5/11/00 design ASSIGNMENTS ROLE GROUP MEMBER FACILITATOR..Eugenia Koo condemnation & TASK KEEPERAlan Lee SCRIBE..Chris Paryse donor.John McMonagle succinct OF PROJECT CONCLUSIONS 1) At pHs below the pKa value ( florid solutions), the maximal milling machinery experimental extinguishing coefficient occurs at 525 nm. pH values preceding(prenominal) the pKa (yellow solutions) have a maximum molar extinction coefficient at 429 nm. 2) There exists a critical wavelength am ong 462 and 465 nm, at which molar extinction coefficient is no longer dependent upon pH. 3) The endpoint to a titration apply methyl group red as an indicator lies betwixt pHs 4.823 and 5.862+0.001, which are the last values at which one sees a red or yellow color, respectively.

OBJECTIVES The primary objective of our study was to determine the relationship between the molar extinction coefficient of methyl red and pH for various wavelengths. Not only was this to be done qualitatively, but also quantitatively through the spirit of appropriate tr endlines. Another, less critical, objective ! concerned the maximum wavelength thoughtless for separately pH tested. Our goal was to determine at what wavelengths distributively pH absorbed best, and if these wavelengths stayed constant for the range of pHs below the pKa(red solution) and for range above the pKa(yellow solution). BACKGROUND INFORMATION As say in the objectives section, this study will attempt to license and pull back a relationship between the extinction coefficient of methyl red and the pH of the solution. The study will also...If you expect to get a full essay, order it on our website: OrderCustomPaper.com

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