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18 Dec 2019

Be (II) (M = 9.0122 g mol-1) is mixed with excess acetylacetine to form a complex that absorbs light at 295 nm. Calaulate the molar absorptivity of the complex at the 295 nm, given that a 1.34 ppm solution has a transmittance of 55.7% when measured in a cell of 1.00-cm light absorption path length at 295 nm.

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Keith Leannon
Keith LeannonLv2
31 Dec 2019

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Related questions

At 580 nm, the wavelength of its maximum absorption, the complex FeSCN2+ has a molar absorptivity of 7.00 X 103 L cm-1 mol-1. Calculate:

(a) the absorbance of a 3.75 X 10-5 M solution of the complex at 580 nm in a 1.00-cm cell.

(b) the absorbance of a solution in which the concentration of the complex is twice that in (a).

(c) the transmittance of the solutions described in (a) and (b).

(d) the absorbance of a solution that has half the transmittance of that described in (a).

The complex FeSCN2 has a molar absorptivity of 7.00 × 103 L/(mol·cm) at a wavelength of 580 nm. Calculate the absorbance and percent transmittance of a 7.52 × 10–5 mol/L solution in a 1.00 cm cell.

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