1. What is the Ideal Gas Law?

The Ideal Gas Law (n = PV/RT) describes the relationship between pressure (P), volume (V), temperature (T), and amount of substance (n) for an ideal gas. It combines Boyle's Law, Charles's Law, and Avogadro's Law into one 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·mol))
• \( T \) — Temperature (K)

Explanation: The equation calculates the number of moles of gas based on its pressure, volume, and temperature, assuming ideal behavior.

3. Importance of Ideal Gas Law

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

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 forces, obeying the ideal gas law exactly.

Q2: How to convert Celsius to Kelvin?
A: Add 273.15 to the Celsius temperature (K = °C + 273.15).

Q3: What is the value of R in other units?
A: R = 8.314 J/(mol·K) or 62.364 L·Torr/(K·mol). Use the appropriate R value for your units.

Q4: When does the ideal gas law fail?
A: At high pressures or low temperatures where molecular volume and intermolecular forces become significant.

Q5: Can I calculate pressure or volume with this?
A: Yes, the equation can be rearranged to solve for any variable when the others are known.