Formula
This calculator uses the equation below. Use it as a quick reference when checking setup before solving.
rate1/rate2 = sqrt(M2/M1)Gas Laws
Grahams Law Calculator
Calculate one of the variables (rate1, rate2, M1, M2) using Graham's Law of Effusion rate1/rate2 = sqrt(M2/M1).
rate1/rate2 = sqrt(M2/M1)
Run this calculator
Leave a nullable field blank to solve for it.
Variable glossary
Rate1 (rate1)
Effusion rate of the first gas. Set to null to calculate.
Rate2 (rate2)
Effusion rate of the second gas. Set to null to calculate.
M1 (M1)
Molar mass of the first gas in g/mol. Set to null to calculate.
M2 (M2)
Molar mass of the second gas in g/mol. Set to null to calculate.
Frequently Asked Questions
What does the Grahams Law calculator solve?
It solves Grahams Law problems in gas laws using your provided inputs and computes unknown values when nullable fields are left blank.
Do I need to convert units before using this tool?
Use the unit toggles where available (for example K/C and L/mL). ChemGenius converts values to the calculator's base units automatically before solving.
Can I save this result in my workflow?
Yes. After computing a result, you can continue into ChemGenius workflows like protocol drafting or notes to keep your calculation context attached to downstream work.