In a calibration plot of absorbance ( ) versus concentration ( ) for a colored…
CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures
Problem
In a calibration plot of absorbance (A) versus concentration (c) for a colored species measured with a fixed 1.00 cm cuvette, the slope of the best-fit line most directly represents which of the following quantities?
(a) εb (molar absorptivity multiplied by path length)
(b) the molar absorptivity of the species, ε
(c) 2.303ε (molar absorptivity converted from natural–log form)
(d) 2.303ε (molar absorptivity converted from base-10 to natural-log form)