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18 Nov 2019
Absorbance depends on the thickness of the sample size. The cuvets for most spectrophotometers hold the sample size to 1 cm, although they can vary. The molar absorptivity (epsilon) is equal to the absorbance of a one-centimeter thick sample of a 1.0 M solution. In this case, epsilon has the units L mol^-1 cm^-1. Epsi changes with wavelength and is generally given for the wavelengths corresponding to the maxima in the absorption curve. How is the constant you found related to the molar absorptivity? A solution known to contain 0.026 M Cu^2+ forms a complex with ethylenediamine that yields an absorbance of 0.37 in a cell of 1.0 cm path length at a selected wavelength. Calculate elementof for these conditions.
Absorbance depends on the thickness of the sample size. The cuvets for most spectrophotometers hold the sample size to 1 cm, although they can vary. The molar absorptivity (epsilon) is equal to the absorbance of a one-centimeter thick sample of a 1.0 M solution. In this case, epsilon has the units L mol^-1 cm^-1. Epsi changes with wavelength and is generally given for the wavelengths corresponding to the maxima in the absorption curve. How is the constant you found related to the molar absorptivity? A solution known to contain 0.026 M Cu^2+ forms a complex with ethylenediamine that yields an absorbance of 0.37 in a cell of 1.0 cm path length at a selected wavelength. Calculate elementof for these conditions.
Irving HeathcoteLv2
27 May 2019