1. What is the Ideal Gas Law Equation?

The Ideal Gas Law describes the relationship between pressure, volume, temperature and amount of an ideal gas. It combines several simpler gas laws (Boyle's, Charles's, Avogadro's) into one comprehensive equation.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

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

Explanation: The equation shows that the amount of gas (in moles) is directly proportional to the product of pressure and volume, and inversely proportional to temperature.

3. Importance of Mole Calculation

Details: Calculating moles of gas is essential for stoichiometric calculations in chemical reactions, determining gas densities, and understanding gas behavior under different conditions.

4. Using the Calculator

Tips: Enter pressure in atmospheres (atm), volume in liters (L), and temperature in Kelvin (K). 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 interactions, obeying the ideal gas law exactly.

Q2: How do I convert Celsius to Kelvin?
A: Kelvin = Celsius + 273.15. Always use Kelvin in gas law calculations.

Q3: What is the value of R in other units?
A: R = 8.314 J·K⁻¹·mol⁻¹ or 62.364 L·Torr·K⁻¹·mol⁻¹, but we use 0.0821 L·atm·K⁻¹·mol⁻¹ in this calculator.

Q4: When does the ideal gas law fail?
A: At high pressures or low temperatures where real gases deviate from ideal behavior due to molecular volume and intermolecular forces.

Q5: Can I use this for mixtures of gases?
A: Yes, but n will represent the total moles of all gas components.