1. What is the Ideal Gas Equation?

The ideal gas equation relates the pressure, volume, temperature and amount of substance of an ideal gas. It provides a fundamental relationship in thermodynamics and physical chemistry.

2. How Does the Calculator Work?

The calculator uses the ideal gas equation:

Where:

• \( p \) — Pressure in Pascals (Pa)
• \( v \) — Volume in cubic meters (m³)
• \( r \) — Universal gas constant (8.314 J/mol/K)
• \( t \) — Temperature in Kelvin (K)
• \( n \) — Amount of substance in moles (mol)

Explanation: The equation shows the direct proportionality between the product of pressure and volume, and the amount of gas, and inverse proportionality with temperature.

3. Importance of Mole Calculation

Details: Calculating moles of gas is essential for stoichiometric calculations, determining reaction yields, and understanding gas behavior under different conditions.

4. Using the Calculator

Tips: Enter pressure in Pascals, volume in cubic meters, and temperature in Kelvin. 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 composed of many randomly moving point particles that interact only through elastic collisions.

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

Q3: Why use Kelvin for temperature?
A: Kelvin is an absolute temperature scale where 0 K represents absolute zero, making it appropriate for gas law calculations.

Q4: Can I use other units with this equation?
A: Yes, but you must ensure all units are consistent and use the appropriate value of the gas constant for those units.

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 for different pressure units.