1. What is the Ideal Gas Equation?

The Ideal Gas Equation (PV = nRT) describes the relationship between pressure (P), volume (V), amount of gas (n), and temperature (T) for an ideal gas. R is the ideal gas constant (0.0821 L·atm/mol·K).

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Equation:

Where:

• \( P \) — Pressure (atm)
• \( V \) — Volume (L)
• \( n \) — Moles of gas (mol)
• \( R \) — Ideal gas constant (0.0821 L·atm/mol·K)
• \( T \) — Temperature (K)

Explanation: The equation shows how these four variables are interrelated for an ideal gas. If three variables are known, the fourth can be calculated.

3. Importance of the Ideal Gas Law

Details: The ideal gas law is fundamental in chemistry and physics for predicting the behavior of gases under different conditions. It's used in various applications from industrial processes to understanding atmospheric phenomena.

4. Using the Calculator

Tips: Enter any three known variables (set the unknown variable to 0). The calculator will solve for the missing variable. 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 perfectly, with particles that have no volume and no intermolecular forces.

Q2: When does the ideal gas law not apply?
A: At high pressures or low temperatures, real gases deviate from ideal behavior due to molecular volume and intermolecular forces.

Q3: What units should I use?
A: Pressure in atm, volume in liters, moles in mol, temperature in Kelvin. The calculator uses R = 0.0821 L·atm/mol·K.

Q4: How do I convert to these units?
A: 1 atm = 760 mmHg = 101.325 kPa. °C to K: add 273.15. For other conversions, use appropriate conversion factors.

Q5: What if my verification result isn't exactly 1?
A: Small deviations are normal due to rounding. Large deviations may indicate measurement errors or non-ideal conditions.