A laboratory must quantify a series of aqueous samples containing a pigment with a…

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

A laboratory must quantify a series of aqueous samples containing a pigment with a molar absorptivity of 1.0×104 M−1 cm−11.0\times10^{4}\,\text{M}^{-1}\,\text{cm}^{-1}. The concentrations range from 1.0×10−6 M1.0\times10^{-6}\,\text{M} to 2.0×10−5 M2.0\times10^{-5}\,\text{M}. The spectrophotometer provides reliable data only when absorbance is between 0.05 and 1.00. Three cuvettes are available: 0.10 cm, 1.00 cm, and 5.00 cm. Which single cuvette allows every sample in the series to be measured without dilution? (a) 0.10 cm cuvette0.10\,\text{cm}\ \text{cuvette} (b) None of the three cuvettes meets the requirement (c) 5.00 cm cuvette5.00\,\text{cm}\ \text{cuvette} (d) 1.00 cm cuvette1.00\,\text{cm}\ \text{cuvette}

Related theory

Browse the problem library