1. What is the Ideal Gas Law?

The Ideal Gas Law is a fundamental equation in thermodynamics that describes the relationship between pressure, volume, temperature, and the number of moles of an ideal gas. It provides a mathematical model for predicting gas behavior under various conditions.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( P \) — Pressure in Pascals (Pa)
• \( n \) — Number of moles (mol)
• \( R \) — Gas constant = 8.314 J/mol·K
• \( T \) — Temperature in Kelvin (K)
• \( V \) — Volume in cubic meters (m³)

Explanation: The equation shows that pressure is directly proportional to the number of moles and temperature, and inversely proportional to volume.

3. Importance of Pressure Calculation

Details: Calculating pressure from moles is essential in chemical engineering, thermodynamics, gas storage systems, and various industrial processes where gas behavior needs to be predicted and controlled.

4. Using the Calculator

Tips: Enter the number of moles in mol, temperature in Kelvin, and volume in cubic meters. All values must be positive and non-zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is an ideal gas?
A: An ideal gas is a theoretical gas that follows the ideal gas law exactly, with particles that have no volume and no intermolecular forces.

Q2: When is the ideal gas law applicable?
A: The ideal gas law works well for most gases at low pressures and high temperatures, where gas molecules are far apart and interactions are minimal.

Q3: How do I convert Celsius to Kelvin?
A: Kelvin = Celsius + 273.15. Always use Kelvin temperature in gas law calculations.

Q4: What are common units for pressure?
A: Common pressure units include Pascals (Pa), atmospheres (atm), millimeters of mercury (mmHg), and pounds per square inch (psi).

Q5: Are there limitations to the ideal gas law?
A: Yes, it becomes less accurate at high pressures and low temperatures where real gas behavior deviates from ideal conditions.