How does temperature affect Henry's law gas solubility?

Unlike most solid solutes, the dissolution of gases in liquids is typically exothermic; heating a liquid decreases gas solubility, which is why boiling water expels dissolved oxygen.

Henry's Law Gas SolubilityChemistry

Henry's Law Gas Solubility in Liquids & Partial Pressure Calculator

Calculate dissolved gas molarity (mol/L) and mass concentration (mg/L or ppm) under variable partial pressures for carbonation, aquatic oxygenation, and scuba diving decompression.

Chemistry & Solutions Solutions & Concentrations Gaseous State

Calculated Result

Dissolved Gas Molarity

0mol/L

Calculator Inputs

Henry's Constant k_H (mol/L·atm - O2=0.0013, CO2=0.034)

mol/(L*atm)

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Gas Partial Pressure P_gas (atm)

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Gas Molar Mass (O2=32, CO2=44 g/mol)

g/mol

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Dissolved Gas Molarity

0mol/L

Dissolved Gas Concentration (mg/L or ppm)

8.74 mg/L

STP Equivalent Gas Volume (mL/L)

6.12 mL/L

Linear Henry Gas Dissolution: Gas solubility scales directly with applied equilibrium partial pressure over the liquid.

Henry's Law Gas Dissolution Profile

Concentration in ppm

8.74 ppm(100%)

Standard chemical solutions and environmental chemistry tool for gas-liquid phase partitioning.

Calculation Methodology

Henry's Law Equation: C = k_H * P_gas. Where C is dissolved concentration (mol/L), k_H is Henry's solubility constant (mol/(L atm) - O2 in water = 0.0013 mol/L·atm at 25°C), and P_gas is partial pressure in atm. Dissolved mg/L = C * Molar Mass * 1000.

Frequently Asked Questions

Bottled soda is pressurized with ~3-4 atm of CO2; unscrewing the cap drops CO2 partial pressure to ambient levels (0.0004 atm), causing dissolved CO2 solubility to plummet according to Henry's Law and effervesce rapidly.

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Chemistry

Henry's Law Gas Solubility in Liquids & Partial Pressure Calculator

Calculator Inputs

Henry's Law Gas Dissolution Profile

Calculation Methodology

Frequently Asked Questions

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