1:25 3O bigåro - HW 3 HW 3 Instrumental analysis CHM 311 The Molar absorptivities for the ions of nickel and cobalt complexed with 8-hydroxyquinoline are shown in the table below at two wavelengths Molar absorptivity (8) at 700 nm 365 nm Ni -complex Co- complex 10 3228 429 3529 a) What is the absorbance of solution ( mixture) consists of 9 x10 4 M Ni?+ and 2x10+ M Co2+ using a 1cm cuvette at 700 nm b) What is the absorbance of solution ( mixture) consists 9 x10 -5 M Ni?+ and 2×10-5 M Co2+ using a 1cm cuvette at 365 nm ...

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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.