Mole Fraction Formula:
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Definition: Mole fraction is the ratio of the partial pressure of a gas to the total pressure of the gas mixture, according to Dalton's Law of Partial Pressures.
Purpose: It helps chemists and engineers determine the concentration of individual gases in a mixture and predict their behavior.
The calculator uses the formula:
Where:
Explanation: The partial pressure of a gas divided by the total pressure gives its mole fraction in the mixture.
Details: Mole fraction is crucial for understanding gas mixtures in chemical reactions, industrial processes, and environmental studies.
Tips: Enter the partial pressure and total pressure in Pascals. Both values must be > 0 and partial pressure cannot exceed total pressure.
Q1: What is Dalton's Law of Partial Pressures?
A: Dalton's Law states that the total pressure of a gas mixture is equal to the sum of the partial pressures of each individual gas.
Q2: What units should I use for pressure?
A: The calculator uses Pascals (Pa), but any consistent pressure units will work as long as both values use the same units.
Q3: Can mole fraction be greater than 1?
A: No, mole fraction is always between 0 and 1 since partial pressure cannot exceed total pressure.
Q4: How does mole fraction relate to percentage?
A: Mole fraction multiplied by 100 gives the percentage concentration of the gas in the mixture.
Q5: What if my gas mixture contains multiple components?
A: The sum of all mole fractions in a mixture always equals 1. Calculate each component's mole fraction separately.