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What is the predominant form of EDTA at > pH 10.0? y4- HY3- H3Y"

Chemistry: Principles and Reactions

8th Edition

ISBN:9781305079373

Author:William L. Masterton, Cecile N. Hurley

Publisher:William L. Masterton, Cecile N. Hurley

Chapter23: Organic Polymers, Natural And Synthetic

Section: Chapter Questions

Problem 29QAP: For alanine, Ka1=5.1105,Ka2=1.81010 . Calculate the ratios [Z]/[C+] and [Z]/[A+] at pH (a) 2.00. (b)...

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.

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For alanine, Ka1=5.1105,Ka2=1.81010 . Calculate the ratios [Z]/[C+] and [Z]/[A+] at pH (a) 2.00. (b) 6.00. (c) 10.50. What is the principal species at each pH?
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20. Based on the structure below, what form of EDTA is represented? -OOCCH₂. CH₂COO- *H_NCH, CH, NÓH* -OOCCH₂ CH₂COO OY4- O HY³- O HAY H₂Y²- H₂Y-
What is the predominant form of EDTA at pH 5? a. H3Y- b.H2Y2- c.HY3- d. Y4-
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[H2O2 (aq)], M 0.0850 0.170 0.250 0.350 0.350 0.350 0.350 [l* (aq)], M 0.100 0.100 0.100 0.100 0.200 0.300 0.400 A [H₂O₂ (aq)] At 1.4 2.9 4.2 5.9 12 18 24 -, (M-s¯¹) x 10-4
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