1. What is the Ideal Gas Law?

The Ideal Gas Law (PV = nRT) describes the relationship between pressure, volume, temperature, and amount of an ideal gas. This calculator specifically calculates volume (V) from pressure in psi, using the formula V = nRT/P.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( V \) — Volume (L)
• \( n \) — Amount of substance (mol)
• \( R \) — Gas constant (0.0821 L·atm/mol·K)
• \( T \) — Temperature (K)
• \( P \) — Pressure (converted from psi to atm)

Explanation: The calculator first converts pressure from psi to atm (1 psi = 0.068046 atm), then applies the ideal gas law to calculate volume in liters.

3. Importance of Volume Calculation

Details: Calculating gas volume from pressure is crucial in various scientific and engineering applications, including chemical reactions, gas storage, pneumatic systems, and environmental studies.

4. Using the Calculator

Tips: Enter amount of substance in moles, temperature in Kelvin, and pressure in psi. All values must be positive numbers. Temperature must be in absolute scale (Kelvin).

5. Frequently Asked Questions (FAQ)

Q1: Why convert psi to atm?
A: The gas constant R = 0.0821 is defined with pressure in atm, so we must convert psi to atm for consistent units in the calculation.

Q2: What is the conversion factor from psi to atm?
A: 1 psi = 0.068046 atm (approximately 1/14.696).

Q3: Why must temperature be in Kelvin?
A: The ideal gas law requires absolute temperature, and Kelvin is the absolute temperature scale where 0 K represents absolute zero.

Q4: When is the ideal gas law not accurate?
A: The ideal gas law becomes less accurate at high pressures, low temperatures, or for gases with strong intermolecular forces.

Q5: Can I use this for real gases?
A: For more accurate results with real gases, especially at high pressures or low temperatures, more complex equations of state should be used.