Beer-Lambert Law: Absorbance 1.0, ε = 5000 L/mol·cm, 1 cm Path
An absorbance of 1.0 with molar absorptivity 5000 L/mol·cm and 1 cm path length gives a concentration of 0.0002 mol/L.
How to use this tool
- Enter absorbance a, molar absorptivity ε, concentration c and path length l in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your absorbance a and the full breakdown beneath it.
Calculate the molar concentration of a solution using the Beer-Lambert law with an absorbance of 1.0, ε = 5000 L/mol·cm, and a 1 cm path length.
Frequently asked questions
- What is molar absorptivity?
- Also called the molar extinction coefficient (ε), it is a measure of how strongly a substance absorbs light at a given wavelength. Units: L/(mol·cm).
- When does Beer-Lambert law break down?
- At high concentrations (above ~0.01 mol/L) due to molecular interactions, or when the light source is not monochromatic.