1. What is the Ideal Gas Law Equation?

The Ideal Gas Law (P = V × n / (R × T)) relates the pressure (P), volume (V), number of moles (n), and temperature (T) of an ideal gas. It provides a fundamental relationship in thermodynamics and gas behavior studies.

2. How Does the Calculator Work?

The calculator uses the Ideal Gas Law equation:

Where:

• \( P \) — Pressure (atm)
• \( V \) — Volume (mL, converted to L)
• \( n \) — Number of moles (mol)
• \( R \) — Gas constant (0.0821 L·atm/(mol·K))
• \( T \) — Temperature (K)

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

3. Importance of Pressure Calculation

Details: Accurate pressure calculation is crucial for various scientific and engineering applications, including chemical reactions, gas storage, and atmospheric studies.

4. Using the Calculator

Tips: Enter volume in mL, moles in mol, and temperature in Kelvin. All values must be valid (positive numbers).

5. Frequently Asked Questions (FAQ)

Q1: Why convert mL to L in the calculation?
A: The gas constant R is defined in L·atm/(mol·K), so volume must be in liters for consistent units.

Q2: What is an ideal gas?
A: An ideal gas is a theoretical gas that follows the ideal gas law perfectly, with no intermolecular forces and perfectly elastic collisions.

Q3: When is the ideal gas law applicable?
A: The ideal gas law works well for many gases at moderate temperatures and pressures, but may deviate at high pressures or low temperatures.

Q4: What is the value of the gas constant R?
A: R = 0.0821 L·atm/(mol·K) when pressure is in atm and volume in liters.

Q5: How to convert Celsius to Kelvin?
A: Kelvin = Celsius + 273.15. Always use absolute temperature (Kelvin) in gas law calculations.