6.33 X10-13 EDTA is a hexaprotic system with the pK, values: pKal = 0.00, pK2 1.50, pK = 2.00, pKt = 2.69, %3D %3D pKas = 6.13, and pK6 10.37. %3D The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Y. This fraction is designated aya. Calculate ayt at two pH values. pH = 3.15 dy= Incorrect 0.1327 pH = 10.55 ayt %3D %3D

6.33 X10-13 EDTA is a hexaprotic system with the pK, values: pKal = 0.00, pK2 1.50, pK = 2.00, pKt = 2.69, %3D %3D pKas = 6.13, and pK6 10.37. %3D The distribution of the various protonated forms of EDTA will therefore vary with pH. For equilibrium calculations involving metal complexes with EDTA, it is convenient to calculate the fraction of EDTA that is in the completely unprotonated form, Y. This fraction is designated aya. Calculate ayt at two pH values. pH = 3.15 dy= Incorrect 0.1327 pH = 10.55 ayt %3D %3D

Chemistry

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Chapter1: Chemical Foundations

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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.

Question

EDTA is a hexaprotic system with the pK, values:
"ooc-CH2
H,C-coo
pKal = 0.00, pK2 = 1.50, pK = 2.00, pK4 = 2.69,
:N-CH-CH-N:
pKas = 6.13, and pK6
= 10.37.
%3D
"ooc-CH2
HC-coo
The distribution of the various protonated forms of EDTA
EDTA“ (or Y-)
will therefore vary with pH. For cquilibrium calculations
involving metal complexes with EDTA, it is convenient to
calculate the fraction of EDTA that is in the completely
unprotonated form, Y. This fraction is designated aya.
Calculate ay at two pH values.
6.33 X10-13
pH = 3.15
ay =
Incorrect
0.1327
pH = 10.55
dy =
%3D
Incorrect

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