Mole Fraction Calculator

Calculate the mole fraction of a component in a mixture based on its moles and the total moles of the mixture.

Input Parameters

Calculation Results

Calculation Formula

Mole Fraction (X₁) = n₁ / ntotal

Where:
X₁ = Mole fraction of component
n₁ = Moles of component
ntotal = Total moles in mixture

Result

Mole Fraction Calculator Calculator Usage Guide

Learn how to use the Mole Fraction Calculator calculator and its working principles

What is Mole Fraction?

Mole fraction (X) is a way of expressing the concentration of a component in a mixture. It is defined as the ratio of the number of moles of a particular component to the total number of moles of all components in the mixture.

How to Use This Calculator

  1. Enter the number of moles of the component you want to calculate the mole fraction for (n₁).
  2. Enter the total number of moles in the mixture (ntotal).
  3. Click the "Calculate" button to compute the mole fraction.
  4. The result will be displayed in the Mole Fraction (X₁) field.

Example Calculation

Suppose you have a mixture containing 2 moles of water (H₂O) and 3 moles of ethanol (C₂H₅OH). The total moles in the mixture would be 2 + 3 = 5 moles.

To find the mole fraction of water:

XH₂O = 2 moles / 5 moles = 0.4

This means that water makes up 40% of the mixture by moles.

Applications

Mole fraction calculations are essential in chemistry for:

  • Understanding gas mixtures in atmospheric science
  • Calculating concentrations in solutions
  • Determining partial pressures in ideal gases
  • Chemical engineering processes