1. What is Henry's Law?

Henry's Law states that the amount of dissolved gas in a liquid is proportional to its partial pressure above the liquid. It's commonly used in chemistry, environmental science, and engineering to calculate gas solubility.

2. How Does the Calculator Work?

The calculator uses Henry's Law equation:

Where:

• \( C \) — Concentration of dissolved gas (mol/L)
• \( k_H \) — Henry's Law constant (mol/(L·atm))
• \( P \) — Partial pressure of the gas (atm)

Explanation: The equation shows a linear relationship between the concentration of a dissolved gas and its partial pressure in the gas phase.

3. Importance of Henry's Law

Details: Henry's Law is crucial for understanding gas exchange in biological systems, designing industrial processes, and environmental studies of gas solubility in water.

4. Using the Calculator

Tips: Enter Henry's Law constant in mol/(L·atm) and partial pressure in atm. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What affects Henry's Law constant?
A: Temperature is the main factor - solubility generally decreases with increasing temperature. The nature of the gas and solvent also affect k_H.

Q2: What are typical units for k_H?
A: Common units include mol/(L·atm), but other units like M/atm or (mg/L)/atm are also used depending on the application.

Q3: Does Henry's Law work for all gases?
A: It works best for gases that don't react with the solvent. Gases that dissociate or react (like CO₂ in water) show deviations at higher pressures.

Q4: How is Henry's Law used in real-world applications?
A: Applications include carbonated beverages, scuba diving (gas solubility in blood), wastewater treatment, and atmospheric gas exchange with oceans.

Q5: What's the difference between Henry's Law and Raoult's Law?
A: Henry's Law describes gas solubility in liquids, while Raoult's Law describes vapor pressure of liquid mixtures.