1. What is Henry Solubility via Aqueous-Phase Mixing Ratio?

Definition: This calculator determines the Henry's law solubility constant based on the molar mixing ratio in the aqueous phase and the partial pressure of the species in the gas phase.

Purpose: It helps chemists and environmental scientists understand gas solubility in liquids, important for atmospheric chemistry and environmental engineering.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( H_{xp} \) — Henry solubility constant (Pa⁻¹)
• \( x \) — Molar mixing ratio in aqueous phase (dimensionless)
• \( P_{species} \) — Partial pressure of the species in gas phase (Pa)

Explanation: The molar mixing ratio is divided by the partial pressure to obtain the Henry solubility constant.

3. Importance of Henry Solubility Calculation

Details: Henry's law constants are crucial for understanding gas exchange between the atmosphere and bodies of water, predicting pollutant behavior, and designing gas scrubbing systems.

4. Using the Calculator

Tips: Enter the molar mixing ratio (dimensionless) and partial pressure (in Pascals). Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the physical meaning of Henry solubility?
A: It represents the equilibrium ratio between the aqueous-phase concentration and gas-phase partial pressure of a species.

Q2: What are typical values for Henry solubility constants?
A: They vary widely by compound - from ~10⁻¹⁰ Pa⁻¹ for very insoluble gases to ~10⁻² Pa⁻¹ for highly soluble ones.

Q3: How does temperature affect Henry solubility?
A: Solubility typically decreases with increasing temperature for most gases (exothermic dissolution).

Q4: What's the difference between Hₓₚ and other Henry's law constants?
A: Hₓₚ uses molar mixing ratio, while other forms may use different concentration units (mol/L, mol/kg, etc.).

Q5: When would I need this calculation?
A: When studying gas-liquid equilibrium, designing absorption systems, or modeling environmental processes.