1. What is the Ideal Gas Law?

The Ideal Gas Law (PV = nRT) describes the relationship between pressure (P), volume (V), temperature (T), and amount of substance (n) for an ideal gas. It combines Boyle's Law, Charles's Law, and Avogadro's Law into one fundamental equation.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( V \) — Volume (L)
• \( n \) — Amount of substance (mol)
• \( R \) — Ideal gas constant (0.0821 L·atm·K⁻¹·mol⁻¹)
• \( T \) — Temperature (K)
• \( P \) — Pressure (atm)

Explanation: The equation calculates the volume occupied by a given amount of gas at specified temperature and pressure conditions.

3. Importance of Ideal Gas Law

Details: The Ideal Gas Law is fundamental in chemistry and physics for predicting gas behavior under various conditions, though real gases deviate from ideal behavior at high pressures and low temperatures.

4. Using the Calculator

Tips: Enter amount of substance in moles, temperature in Kelvin, and pressure in atmospheres. 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 whose molecules occupy negligible space and have no intermolecular forces, obeying the ideal gas law exactly.

Q2: When does the ideal gas law not apply?
A: At high pressures or low temperatures where molecular volume and intermolecular forces become significant.

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

Q4: What are common values for R?
A: 0.0821 L·atm·K⁻¹·mol⁻¹ (this calculator), 8.314 J·K⁻¹·mol⁻¹, or 62.36 L·torr·K⁻¹·mol⁻¹.

Q5: Can I use other pressure units?
A: This calculator uses atm. For other units, you would need to use a different value of R or convert your pressure to atm first.