Question

Assuming linear behavior and a pathlength of exactly 1 cm, what molar concentration will measure an absorbance of

Answer 1

For this problem, we use the equation derived from Beer's Law as written below:

A = ∈LC,
where
A is the absorbance
∈ is the molar absorptivity
L is the path length of the cuvette
C is the concentration of the sample solution placed in the cuvette

To determine C, we have to know the rest of the parameters. Generally, the equation for C would be:

C = A/∈L = A/∈(1 cm)
C = A/∈

If you know the absorbance and the molar absorptivity in mol/L·cm, you can determine the value of C.