1. What is Compressibility Factor?

Definition: The compressibility factor (Z) is a correction factor that describes the deviation of a real gas from ideal gas behavior.

Purpose: It helps engineers and scientists account for non-ideal behavior in gas calculations, especially at high pressures or low temperatures.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Z_{ktog} \) — Compressibility factor (dimensionless)
• \( V_m \) — Molar volume of real gas (m³)
• \( V_{m(ideal)} \) — Molar volume of ideal gas (m³)

Explanation: The ratio of actual molar volume to ideal molar volume gives the compressibility factor.

3. Importance of Compressibility Factor

Details: Z values help in accurate gas calculations for industrial processes, chemical engineering, and thermodynamic studies.

4. Using the Calculator

Tips: Enter the molar volume of real gas and molar volume of ideal gas in cubic meters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What does Z = 1 mean?
A: When Z = 1, the gas behaves ideally (real molar volume equals ideal molar volume).

Q2: What are typical Z values?
A: Z can be less than 1 (attractive forces dominate) or greater than 1 (repulsive forces dominate).

Q3: How do I find molar volumes?
A: Molar volume can be calculated from PV=nRT for ideal gases or measured experimentally for real gases.

Q4: When is this calculation most important?
A: For high-pressure systems or when working with gases near their critical points.

Q5: What units should I use?
A: Use consistent units (m³ in this calculator) for both volume measurements.