1. What is Total Pressure?

Total pressure refers to the sum of all partial pressures in a gas mixture. According to Dalton's Law of Partial Pressures, the total pressure exerted by a mixture of non-reacting gases is equal to the sum of the partial pressures of individual gases.

2. How Does the Calculator Work?

The calculator uses the total pressure formula:

Where:

• \( P_{total} \) — Total pressure of the gas mixture (Pa)
• \( P_i \) — Partial pressure of each individual gas component (Pa)
• \( \sum \) — Summation symbol indicating addition of all partial pressures

Explanation: The formula simply adds up all the partial pressures of the gases present in the mixture to determine the total pressure.

3. Importance of Total Pressure Calculation

Details: Calculating total pressure is essential in various fields including chemistry, physics, engineering, and environmental science. It helps in understanding gas behavior, designing pressure systems, and analyzing atmospheric conditions.

4. Using the Calculator

Tips: Enter partial pressure values separated by commas. All values should be in Pascals (Pa). The calculator will sum all the provided values to give the total pressure.

5. Frequently Asked Questions (FAQ)

Q1: What is Dalton's Law of Partial Pressures?
A: Dalton's Law states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.

Q2: What units should I use for pressure?
A: The calculator uses Pascals (Pa), but you can convert from other units like atm, mmHg, or bar before entering values.

Q3: Does this work for ideal gases only?
A: Dalton's Law applies exactly to ideal gases and approximately to real gases at low pressures and high temperatures.

Q4: What if the gases react with each other?
A: Dalton's Law applies only to non-reacting gases. If gases react, their partial pressures may change due to chemical reactions.

Q5: How is partial pressure related to mole fraction?
A: For ideal gases, partial pressure of a gas equals its mole fraction multiplied by the total pressure (P_i = x_i × P_total).