Partial Pressure Formula

Partial Pressure Formula:

\[ P_i = X_i \times P_{total} \]

Partial Pressure (P_i) (Pa):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Partial Pressure Formula?

Definition: This calculator determines the partial pressure of a gas in a mixture using Dalton's Law of Partial Pressures.

Purpose: It helps chemists, engineers, and students calculate the pressure exerted by individual gases in a mixture.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_i = X_i \times P_{total} \]

Where:

\( P_i \) — Partial pressure of component i (Pa)
\( X_i \) — Mole fraction of component i (dimensionless)
\( P_{total} \) — Total pressure of the gas mixture (Pa)

Explanation: The partial pressure of a gas is directly proportional to its mole fraction in the mixture.

3. Importance of Partial Pressure Calculations

Details: Partial pressures are crucial for understanding gas behavior, chemical reactions, and processes like respiration and industrial gas applications.

4. Using the Calculator

Tips: Enter the mole fraction (between 0 and 1) and total pressure (must be > 0). The calculator will compute the partial pressure.

5. Frequently Asked Questions (FAQ)

Q1: What is mole fraction?
A: Mole fraction is the ratio of moles of a component to the total moles of all components in the mixture.

Q2: Can mole fraction be greater than 1?
A: No, mole fraction is always between 0 and 1 for any component in a mixture.

Q3: What units should I use for pressure?
A: The calculator uses Pascals (Pa), but you can convert from other units (1 atm = 101325 Pa).

Q4: Does this work for ideal gases only?
A: The formula is exact for ideal gases and a good approximation for real gases at moderate pressures.

Q5: How is this related to Dalton's Law?
A: Dalton's Law states that the total pressure equals the sum of partial pressures of all components.