Partial Pressure Formula:
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Definition: Partial pressure is the notional pressure of a constituent gas if it alone occupied the entire volume of the mixture at the same temperature.
Purpose: This calculator helps determine the partial pressure of a gas in a mixture using Dalton's Law of Partial Pressures.
The calculator uses the formula:
Where:
Explanation: The total pressure is multiplied by the mole fraction of the gas component to determine its partial pressure.
Details: Partial pressure calculations are crucial in gas mixtures for understanding gas behavior, chemical reactions, and biological systems like respiration.
Tips: Enter the total pressure in Pascals and the mole fraction (between 0 and 1). All values must be > 0.
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 its component gases.
Q2: What's a typical mole fraction value?
A: Mole fraction ranges from 0 to 1. For example, oxygen in air has a mole fraction of about 0.21.
Q3: Can mole fraction be greater than 1?
A: No, mole fraction is always between 0 and 1 as it represents a fraction of the total moles.
Q4: What units should I use for pressure?
A: The calculator uses Pascals (Pa), but you can convert from other units before entering the value.
Q5: How is this used in real-world applications?
A: Used in scuba diving (gas mixtures), medical applications (oxygen therapy), and industrial gas processes.