Molar Absorptivity Constant Calculator

Calculate Molar Absorptivity Constant





Formula

The formula to calculate the molar absorptivity constant is:

\[ \varepsilon = \frac{A}{c \cdot l} \]

Where:

What is Molar Absorptivity Constant?

The molar absorptivity constant, also known as the molar extinction coefficient, is a measure of how well a chemical species absorbs light at a particular wavelength. It is an intrinsic property of the substance and is used in Beer-Lambert law to relate the absorbance of a solution to its concentration and the path length of the cuvette in spectrophotometry.

Example Calculation

Let's assume the following values:

Using the formula to calculate the molar absorptivity constant:

\[ \varepsilon = \frac{0.5}{0.01 \times 1} = 50 \text{ L/mol*cm} \]

The molar absorptivity constant is 50 L/mol*cm.