Electrophoretic mobility of the anionic form A-A - of the weak acid phenol (HA=C 6 H 5

Question:

Electrophoretic mobility of the anionic form A-A^- of the weak acid phenol (HA=C₆H₅OH) (HA=C₆H₅OH) and its derivatives are:

a. Explain the trend in electrophoretic mobility from phenol to 4-4-methylphenol to 4-4-ethylphenol.

b. Predict the electrophoretic mobility of the analytes at pH 10.0.pH 10.0. Explain why the predicted mobility differs from μA-μ_A-.

c. The electroosmotic mobility is toward the cathode and greater in magnitude than the analyte electrophoretic mobilities. In what order will the peaks appear in the electropherogram at pH 10.0? pH 10.0?

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Quantitative Chemical Analysis

ISBN: 9781319164300

10th Edition

Authors: Daniel C. Harris, Charles A. Lucy

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Question Posted: Oct 06, 2022 02:50 AM

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Electrophoretic mobility of the anionic form A-A - of the weak acid phenol (HA=C 6 H 5

Question:

Analyte HA Phenol 4-Methylphenol 4-Ethylphenol 2,4,5-Trichlorophenol ркар.Ка 9.980.98 10.2710.27 10.2210.22 6.836.83 μA-(m2/(V-s))-(m²/(V-s)) -2.99×10-8-2.99 x 10 -2.59×10-8-2.50 x 10* -2.39-10-8-2.39 x 10-8 -2.85-10-8-2.85 x 10³

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a The trend in electrophoretic mobility from phenol to 44methylphenol to 44ethylphenol is that the m...View the full answer

Quantitative Chemical Analysis

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