1. What is Henry Solubility?

Definition: Henry Solubility is the solubility of a gas in a liquid, representing the ratio between the concentration of a species in the aqueous phase and its partial pressure in the gas phase.

Purpose: It helps quantify how much of a gas will dissolve in a liquid under specific conditions, important in chemical engineering, environmental science, and various industrial processes.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( H_{cp} \) — Henry solubility constant (mol/m³/Pa)
• \( C_a \) — Concentration of species in aqueous phase (mol/m³)
• \( P_{species} \) — Partial pressure of that species in gas phase (Pa)

Explanation: The concentration of the dissolved gas is divided by its partial pressure in the gas phase to determine its solubility.

3. Importance of Henry Solubility

Details: Henry's Law is crucial for understanding gas-liquid equilibria, designing absorption systems, predicting gas behavior in natural waters, and modeling atmospheric processes.

4. Using the Calculator

Tips: Enter the concentration in mol/m³ and partial pressure in Pascals. Both values must be > 0. The result is given in mol/m³/Pa.

5. Frequently Asked Questions (FAQ)

Q1: What are typical units for Henry solubility?
A: Common units include mol/m³/Pa, though other units like atm⁻¹ are also used depending on the application.

Q2: How does temperature affect Henry solubility?
A: Generally, solubility decreases with increasing temperature for most gases (exothermic dissolution).

Q3: What's the difference between Henry's Law and Raoult's Law?
A: Henry's Law applies to dilute solutions of gases, while Raoult's Law applies to ideal solutions of liquids.

Q4: Can Henry's constant vary for the same gas?
A: Yes, it depends on temperature, solvent, and sometimes pressure range.

Q5: How is this used in environmental science?
A: It helps model gas exchange between atmosphere and water bodies, important for understanding greenhouse gas cycles.