Question

Given the following results, calculate the molar absorptivity

absorbance .500
light path 1.0 cm
concentration 0.2

Answer 1

The molar absorptivity can be calculated using Beer's Law, which relates the absorbance (A) of a sample to its molar absorptivity (ε), concentration (c), and path length (l).

Step-by-step explanation:

The molar absorptivity can be calculated using Beer's Law, which relates the absorbance (A) of a sample to its molar absorptivity (ε), concentration (c), and path length (l). The formula is A = εcl. In this case, the absorbance is given as 0.500, the path length is 1.0 cm, and the concentration is 0.2 M. Plugging in these values, we can solve for the molar absorptivity:

A = εcl

0.500 = ε(0.2)(1.0)

ε = 0.500 / (0.2)(1.0)

ε = 2.5