1. What is the Ideal Gas Law?

The Ideal Gas Law (P = nRT/V) describes the relationship between pressure, volume, temperature, and the number of moles of an ideal gas. It provides a fundamental equation for calculating gas properties under various conditions.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

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

Explanation: The equation calculates the pressure exerted by an ideal gas based on the number of moles, temperature, and volume of the gas.

3. Importance of Pressure Calculation

Details: Accurate pressure calculation is crucial for various applications in chemistry, physics, and engineering, including gas behavior analysis, container design, and safety assessments.

4. Using the Calculator

Tips: Enter the number of moles in mol, gas constant in J/(mol·K), temperature in Kelvin, and volume in cubic meters. All values must be positive numbers.

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 best for gases at high temperatures and low pressures where gas particles behave ideally.

Q3: What are common values for the gas constant R?
A: The most common value is 8.314 J/(mol·K), but it can also be expressed as 0.0821 L·atm/(mol·K) or 62.36 L·torr/(mol·K).

Q4: How do I convert temperature to Kelvin?
A: Kelvin = Celsius + 273.15. For Fahrenheit: Kelvin = (Fahrenheit - 32) × 5/9 + 273.15.

Q5: What are the limitations of the ideal gas law?
A: The law becomes less accurate at high pressures and low temperatures where real gases deviate from ideal behavior due to intermolecular forces and molecular volume.