A cobalt(II) nitrate sample shows an absorbance of 0.273 at 510 nm when measured in a…

CHEMISTRY · Subjective · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

A cobalt(II) nitrate sample shows an absorbance of 0.273 at 510 nm when measured in a 5.00 mm path-length cuvette. The molar absorptivity at this wavelength is 4.80×10² L mol⁻¹ cm⁻¹. Determine the concentration of Co²⁺ in the sample (M), reporting your answer to three significant figures.

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