1. What is the Ideal Gas Law?

The Ideal Gas Law relates the pressure, volume, temperature, and number of moles of an ideal gas. It is expressed as PV = nRT, where P is pressure, V is volume, n is number of moles, R is the gas constant, and T is temperature.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( P \) — Pressure in Pascals (Pa)
• \( n \) — Number of moles (dimensionless)
• \( R \) — 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 gas pressure is essential in chemistry, physics, and engineering applications, including gas storage, chemical reactions, and industrial processes.

4. Using the Calculator

Tips: Enter the number of moles, 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 does the Ideal Gas Law not apply?
A: The law becomes less accurate at high pressures or low temperatures where real gases deviate from ideal behavior.

Q3: How do I convert Celsius to Kelvin?
A: Add 273.15 to the Celsius temperature to get Kelvin (K = °C + 273.15).

Q4: What are common units for pressure?
A: While we use Pascals (Pa) here, other common units include atm (1 atm = 101325 Pa) and mmHg (1 mmHg ≈ 133.322 Pa).

Q5: Can I use this for mixtures of gases?
A: Yes, but n should represent the total number of moles of all gas particles in the mixture.