1. What is the Ideal Gas Law?

The Ideal Gas Law (PV = nRT) describes the relationship between pressure (P), volume (V), number of moles (n), and temperature (T) of an ideal gas. The constant R is the universal gas constant (8.314 J/mol·K).

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( P \) — Pressure (Pascals)
• \( V \) — Volume (cubic meters)
• \( n \) — Number of moles
• \( R \) — Universal gas constant (8.314 J/mol·K)
• \( T \) — Temperature (Kelvin)

Explanation: The equation shows the proportional relationship between these variables for an ideal gas.

3. Importance of Ideal Gas Law

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

4. Using the Calculator

Tips: Select which variable you want to calculate, then enter values for the other three variables. 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 perfectly follows the Ideal Gas Law, 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 where real gases deviate from ideal behavior, or for gases with strong intermolecular forces.

Q3: What units should I use?
A: The calculator uses SI units: Pascals for pressure, cubic meters for volume, moles for quantity, and Kelvin for temperature.

Q4: Can I use other units?
A: You must convert to the specified units before calculation or modify the gas constant R accordingly.

Q5: What is the value of R in other units?
A: Common values include 0.08206 L·atm/mol·K and 62.36 L·torr/mol·K.