1. What is the Ideal Gas Law?

The Ideal Gas Law (PV = nRT) describes the relationship between pressure, volume, temperature, and number of moles of an ideal gas. It combines Boyle's Law, Charles's Law, and Avogadro's Law into a single equation.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( V \) — Volume (m³)
• \( n \) — Number of moles (mol)
• \( R \) — Gas constant (8.314 J/mol·K)
• \( T \) — Temperature (K)
• \( P \) — Pressure (Pa)

Explanation: The equation calculates the volume occupied by an ideal gas given the number of moles, temperature, pressure, and gas constant.

3. Importance of Gas Law Calculation

Details: The Ideal Gas Law is fundamental in chemistry and physics for predicting gas behavior under different conditions. It's used in various applications from industrial processes to scientific research.

4. Using the Calculator

Tips: Enter moles, gas constant (default is 8.314 J/mol·K), temperature in Kelvin, and pressure in Pascals. 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 gas laws perfectly, with particles that have no volume and no intermolecular forces.

Q2: When is the ideal gas law not accurate?
A: At high pressures and low temperatures, real gases deviate from ideal behavior due to intermolecular forces and finite molecular size.

Q3: What are common units for the gas constant?
A: Common values include 8.314 J/mol·K, 0.0821 L·atm/mol·K, and 62.36 L·torr/mol·K.

Q4: How do I convert Celsius to Kelvin?
A: Add 273.15 to the Celsius temperature to get Kelvin (K = °C + 273.15).

Q5: What is standard temperature and pressure (STP)?
A: STP is defined as 0°C (273.15 K) and 1 atm (101.325 kPa) pressure.