Co and Ni can be analysed simultaneously by their reaction with 2, 3-quinoxalinedithiol. Molar absorptivity data at the wavelengths are: Co-Complex Ni-Complex Molar Absorptivity.c 510 nm 36400 5520 656 nm 1240 17500 A 0.519 g sample was dissolved and diluted to 50 ml. A 25 ml aliquot was treated to eliminate interferences; after addition of 2, 3-quinoxalinedithiol, the volume was adjusted to 50 ml. this solution had an absorbance of 0.477 at 510 nm and 0.219 at 656 nm in 1.00 cm cell. Calculate the parts per million of Co and Ni in the sample.

Co and Ni can be analysed simultaneously by their reaction with 2, 3-quinoxalinedithiol. Molar absorptivity data at the wavelengths are: Co-Complex Ni-Complex Molar Absorptivity.c 510 nm 36400 5520 656 nm 1240 17500 A 0.519 g sample was dissolved and diluted to 50 ml. A 25 ml aliquot was treated to eliminate interferences; after addition of 2, 3-quinoxalinedithiol, the volume was adjusted to 50 ml. this solution had an absorbance of 0.477 at 510 nm and 0.219 at 656 nm in 1.00 cm cell. Calculate the parts per million of Co and Ni in the sample.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter26: Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 26.5QAP

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