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Molar Extinction Coefficient Calculator

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✖Absorbance is also known as optical density of the solution used in calculating the concentration of a solution on the basis of its light absorption.ⓘ Absorbance [A]			+10% -10%
✖The Concentration of Solution is the quantity of a solute that is contained in a particular quantity of solvent or solution.ⓘ Concentration of Solution [c]			+10% -10%
✖Thickness of Cell is useful in calculating the concentration of a solution on the basis of its light absorption.ⓘ Thickness of Cell [l]			+10% -10%

✖The Molar Extinction Coefficient is a measure of how strongly a chemical species or substance absorbs light at a particular wavelength.ⓘ Molar Extinction Coefficient [ε]

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Molar Extinction Coefficient Solution

STEP 0: Pre-Calculation Summary

Formula Used

Molar Extinction Coefficient = Absorbance/(Concentration of Solution*Thickness of Cell)
ε = A/(c*l)
This formula uses 4 Variables

Variables Used

Molar Extinction Coefficient - (Measured in Square Meter per Mole) - The Molar Extinction Coefficient is a measure of how strongly a chemical species or substance absorbs light at a particular wavelength.
Absorbance - Absorbance is also known as optical density of the solution used in calculating the concentration of a solution on the basis of its light absorption.
Concentration of Solution - (Measured in Mole per Cubic Meter) - The Concentration of Solution is the quantity of a solute that is contained in a particular quantity of solvent or solution.
Thickness of Cell - (Measured in Meter) - Thickness of Cell is useful in calculating the concentration of a solution on the basis of its light absorption.

STEP 1: Convert Input(s) to Base Unit

Absorbance: 0.92 --> No Conversion Required
Concentration of Solution: 97 Mole per Cubic Meter --> 97 Mole per Cubic Meter No Conversion Required
Thickness of Cell: 50.5 Nanometer --> 5.05E-08 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

ε = A/(c*l) --> 0.92/(97*5.05E-08)

Evaluating ... ...

ε = 187812.595692559

STEP 3: Convert Result to Output's Unit

187812.595692559 Square Meter per Mole -->1878125956.92559 Square Centimeter per Mole (Check conversion here)

FINAL ANSWER

1878125956.92559 ≈ 1.9E+9 Square Centimeter per Mole <-- Molar Extinction Coefficient

(Calculation completed in 00.004 seconds)

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National Institute of Information Technology (NIIT), Neemrana

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< Beer Lambert law Calculators

Concentration of Solution

LaTeX Go Concentration of Solution = Absorbance/(Thickness of Cell*Molar Extinction Coefficient)

Beer-Lambert law given Intensity of Radiation

LaTeX Go Absorbance = log10(Intensity of Incident Radiation/Intensity of Transmitted Radiation)

Absorbance using Beer-Lambert Law

LaTeX Go Absorbance = Molar Extinction Coefficient*Concentration of Solution*Thickness of Cell

Intensity of Incident Radiation

LaTeX Go Intensity of Incident Radiation = Intensity of Transmitted Radiation*10^(Absorbance)

Molar Extinction Coefficient Formula

LaTeX Go

Molar Extinction Coefficient = Absorbance/(Concentration of Solution*Thickness of Cell)
ε = A/(c*l)

What is Beer- Lambert Law?

Beer-Lambert law is useful in calculating the concentration of a solution on the basis of its light absorption. This law relates the intensity of the transmitted monochromatic light to the concentration of the solution and the thickness of the cell in which the solution is kept.
The molar extinction coefficient of a substance can be determined using a colorimeter or a spectrophotometer as follows. The absorbances of a solution are measured at different
known concentrations using a cell of known thickness (l). The plot of absorbance, A against Concentration of solution, c gives a straight line and its slope is equal to εl.

Define Photochemistry.

In photochemistry, we study the absorption and emission of light by matter. It consists of the study of various photo physical processes and photochemical reactions. Two important photo physical processes are fluorescence and phosphorescence. During fluorescence, light emission takes place in the presence of exciting radiation; but the light emission stops, once the exciting radiation is removed. In contrast to this, during phosphorescence, light emission takes place even after the removal of the exciting radiation.
In photochemical reactions, the substances acquire the necessary activation energy through light absorption. Again this is in contrast to the thermal reactions in which the reactants acquire their activation energy through collisions between molecules.

How to Calculate Molar Extinction Coefficient?

Molar Extinction Coefficient calculator uses Molar Extinction Coefficient = Absorbance/(Concentration of Solution*Thickness of Cell) to calculate the Molar Extinction Coefficient, The Molar extinction coefficient formula is defined as a measure of how strongly a chemical species or substance absorbs light at a particular wavelength. Molar Extinction Coefficient is denoted by ε symbol.

How to calculate Molar Extinction Coefficient using this online calculator? To use this online calculator for Molar Extinction Coefficient, enter Absorbance (A), Concentration of Solution (c) & Thickness of Cell (l) and hit the calculate button. Here is how the Molar Extinction Coefficient calculation can be explained with given input values -> 1.9E+13 = 0.92/(97*5.05E-08).

FAQ

What is Molar Extinction Coefficient?

The Molar extinction coefficient formula is defined as a measure of how strongly a chemical species or substance absorbs light at a particular wavelength and is represented as ε = A/(c*l) or Molar Extinction Coefficient = Absorbance/(Concentration of Solution*Thickness of Cell). Absorbance is also known as optical density of the solution used in calculating the concentration of a solution on the basis of its light absorption, The Concentration of Solution is the quantity of a solute that is contained in a particular quantity of solvent or solution & Thickness of Cell is useful in calculating the concentration of a solution on the basis of its light absorption.

How to calculate Molar Extinction Coefficient?

The Molar extinction coefficient formula is defined as a measure of how strongly a chemical species or substance absorbs light at a particular wavelength is calculated using Molar Extinction Coefficient = Absorbance/(Concentration of Solution*Thickness of Cell). To calculate Molar Extinction Coefficient, you need Absorbance (A), Concentration of Solution (c) & Thickness of Cell (l). With our tool, you need to enter the respective value for Absorbance, Concentration of Solution & Thickness of Cell and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Molar Extinction Coefficient?

In this formula, Molar Extinction Coefficient uses Absorbance, Concentration of Solution & Thickness of Cell. We can use 2 other way(s) to calculate the same, which is/are as follows -

Molar Extinction Coefficient = log10(Intensity of Incident Radiation/Intensity of Transmitted Radiation)*(1/(Thickness of Cell*Concentration of Solution))
Molar Extinction Coefficient = Slope of Line/Thickness of Cell

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