Optical Purity Calculator

⤿

✖Observed Specific Rotation is the change in orientation of monochromatic plane-polarized light in a mixture.ⓘ Observed Specific Rotation [[α]_obs]			+10% -10%
✖Maximum Specific Rotation is the specific rotation of the pure enantiomer.ⓘ Maximum Specific Rotation [[α]_max]			+10% -10%

✖The Optical Purity is a comparison of the optical rotation of a pure sample of unknown stereochemistry versus the optical rotation of a sample of pure enantiomer.ⓘ Optical Purity [OP]

⎘ Copy

👎

Formula

✖

Optical Purity

Formula

`"OP" = ("[α]"_{"obs"}/"[α]"_{"max"})*100`

Example

`"75"=("45deg.mL.g⁻¹.dm⁻¹"/"60deg.mL.g⁻¹.dm⁻¹")*100`

Calculator

LaTeX

Reset

👍

Download Chemistry Formula PDF PDF Image

Optical Purity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Optical Purity = (Observed Specific Rotation/Maximum Specific Rotation)*100
OP = ([α]_obs/[α]_max)*100
This formula uses 3 Variables

Variables Used

Optical Purity - The Optical Purity is a comparison of the optical rotation of a pure sample of unknown stereochemistry versus the optical rotation of a sample of pure enantiomer.
Observed Specific Rotation - (Measured in Radian Cubic Meter per Kilogram per Meter) - Observed Specific Rotation is the change in orientation of monochromatic plane-polarized light in a mixture.
Maximum Specific Rotation - (Measured in Radian Cubic Meter per Kilogram per Meter) - Maximum Specific Rotation is the specific rotation of the pure enantiomer.

STEP 1: Convert Input(s) to Base Unit

Observed Specific Rotation: 45 Degree Milliliter per Gram per Decimeter --> 0.00785398163397301 Radian Cubic Meter per Kilogram per Meter (Check conversion here)
Maximum Specific Rotation: 60 Degree Milliliter per Gram per Decimeter --> 0.010471975511964 Radian Cubic Meter per Kilogram per Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

OP = ([α]_obs/[α]_max)*100 --> (0.00785398163397301/0.010471975511964)*100

Evaluating ... ...

OP = 75.0000000000001

STEP 3: Convert Result to Output's Unit

75.0000000000001 --> No Conversion Required

FINAL ANSWER

75.0000000000001 ≈ 75 <-- Optical Purity

(Calculation completed in 00.004 seconds)

You are here -

Home » Chemistry » Organic Chemistry » Optical Activity » Optical Purity

Credits

Created by Sangita Kalita

National Institute of Technology, Manipur (NIT Manipur), Imphal, Manipur

Sangita Kalita has created this Calculator and 50+ more calculators!

Verified by Soupayan banerjee

National University of Judicial Science (NUJS), Kolkata

Soupayan banerjee has verified this Calculator and 800+ more calculators!

< 7 Optical Activity Calculators

Percent Enantiomeric Excess Considering Amount of Enantiomer

Go Percent Enantiomeric Excess = (abs(Moles of R-Moles of S)/(Moles of R+Moles of S))*100

Specific Rotation of Optically Active Compound

Go Specific Rotation = Observed Rotation/(Length Of Sample Tube*Concentration of Solution in Polarimeter)

Percent Enantiomeric Excess

Go Percent Enantiomeric Excess = abs(Mole Fraction of R-Mole Fraction of S)*100

Enantiomeric Excess

Go Enantiomeric Excess = abs(Mole Fraction of R-Mole Fraction of S)

Optical Purity

Go Optical Purity = (Observed Specific Rotation/Maximum Specific Rotation)*100

Fraction of Major Isomer

Go Mole Fraction of R = 50+(Percent Enantiomeric Excess/2)

Fraction of Minor Isomer

Go Mole Fraction of S = 50-(Percent Enantiomeric Excess/2)

Optical Purity Formula

Optical Purity = (Observed Specific Rotation/Maximum Specific Rotation)*100
OP = ([α]_obs/[α]_max)*100

What are Enantiomers?

Enantiomers are a pair of molecules that exist in two forms that are mirror images of one another but cannot be superimposed one upon the other.

How to Calculate Optical Purity?

Optical Purity calculator uses Optical Purity = (Observed Specific Rotation/Maximum Specific Rotation)*100 to calculate the Optical Purity, The Optical Purity formula is defined as a comparison of the optical rotation of a pure sample of unknown stereochemistry versus the optical rotation of a sample of pure enantiomer. It is a measure of the proportion of one enantiomer in a mixture of enantiomers. Optical Purity is denoted by OP symbol.

How to calculate Optical Purity using this online calculator? To use this online calculator for Optical Purity, enter Observed Specific Rotation ([α]_obs) & Maximum Specific Rotation ([α]_max) and hit the calculate button. Here is how the Optical Purity calculation can be explained with given input values -> 75 = (0.00785398163397301/0.010471975511964)*100.

FAQ

What is Optical Purity?

The Optical Purity formula is defined as a comparison of the optical rotation of a pure sample of unknown stereochemistry versus the optical rotation of a sample of pure enantiomer. It is a measure of the proportion of one enantiomer in a mixture of enantiomers and is represented as OP = ([α]_obs/[α]_max)*100 or Optical Purity = (Observed Specific Rotation/Maximum Specific Rotation)*100. Observed Specific Rotation is the change in orientation of monochromatic plane-polarized light in a mixture & Maximum Specific Rotation is the specific rotation of the pure enantiomer.

How to calculate Optical Purity?

The Optical Purity formula is defined as a comparison of the optical rotation of a pure sample of unknown stereochemistry versus the optical rotation of a sample of pure enantiomer. It is a measure of the proportion of one enantiomer in a mixture of enantiomers is calculated using Optical Purity = (Observed Specific Rotation/Maximum Specific Rotation)*100. To calculate Optical Purity, you need Observed Specific Rotation ([α]_obs) & Maximum Specific Rotation ([α]_max). With our tool, you need to enter the respective value for Observed Specific Rotation & Maximum Specific Rotation and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search