The complex that is formed between gallium (III) and 8-hydroxyquinoline has an absorption maximum of 236nm....
The complex that is formed between gallium (III) and 8-hydroxyquinoline has an absorption maximum of 236nm. A 0.0077M solution of the complex has a transmittance of 7.9% when measured in a 1.00-cm cell at this wavelength. Calculate the molar absorptivity of the compex.
Homework Answers
absorbance = A = -log T
A = -log (7.9 /100)
A = 1.10
C = 0.0077 M
b = 1.00 cm
A = E x b x C
1.10 = E x 1.00 x 0.0077
E = 143.2 M-1cm-1
molar absorptivity = 143 M-1 cm-1
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