# Question #7f7a2

Oct 26, 2015

Using Beer-Lambert Law

#### Explanation:

The relationship between absorbance $A$ and concentration $C$ is giving by the Beer-Lambert law:

$A = \epsilon \times l \times C$

where, $\epsilon$ is the molar absorptivity of the solution, $l$ is the light path.

Therefore, if you have the absorbance $A$, the concentration can be calculated by: $C = \frac{A}{\epsilon \times l}$

Here is a video featuring a full experiment on Beer-Lamber Law: