1. What is Ideal Gas Enthalpy in a Binary System?

Definition: This calculator computes the enthalpy of an ideal gas mixture in a binary system using the ideal gas mixture model.

Purpose: It helps chemical engineers and researchers determine the enthalpy of gas mixtures for thermodynamic calculations.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( H_{ig} \) — Ideal gas enthalpy of mixture (J)
• \( y_1 \) — Mole fraction of component 1 in vapour phase
• \( H_{1ig} \) — Ideal gas enthalpy of component 1 (J)
• \( y_2 \) — Mole fraction of component 2 in vapour phase
• \( H_{2ig} \) — Ideal gas enthalpy of component 2 (J)

Explanation: The total enthalpy is the mole-fraction-weighted sum of the individual component enthalpies.

3. Importance of Ideal Gas Enthalpy Calculation

Details: Accurate enthalpy calculations are essential for energy balance calculations, process design, and thermodynamic analysis of gas mixtures.

4. Using the Calculator

Tips: Enter the mole fractions (must sum to 1) and ideal gas enthalpies for both components. All values must be valid numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why must mole fractions sum to 1?
A: In a binary system, the two components must account for 100% of the mixture, so y₁ + y₂ must equal 1.

Q2: What units should be used for enthalpy?
A: The calculator uses joules (J) for consistency, but any consistent energy unit can be used as long as both components use the same unit.

Q3: Does this work for non-ideal gases?
A: No, this calculator uses the ideal gas mixture model. For real gases, additional correction factors would be needed.

Q4: Can this be extended to more than two components?
A: Yes, the principle can be extended to multicomponent systems by adding more terms to the summation.

Q5: Where can I find ideal gas enthalpy values?
A: These are typically found in thermodynamic tables or databases for pure components at specific temperatures.