Henry's Law — Definition, Formula, Properties & Uses | AllChemicals | AllChemicals

What is Henry's Law?

Henry's law states that at constant temperature, the amount of a gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid. It is expressed as C = k_H × P, where C is the concentration of dissolved gas, P is its partial pressure, and k_H is the Henry's law constant specific to the gas-solvent system. This law explains why carbonated beverages go flat when opened (reducing CO₂ pressure) and is essential in understanding gas exchange in biological and environmental systems.

Key Facts

Term Henry's Law

Index All "H" terms

Frequently Asked Questions

What is Henry's Law?

Henry's law states that at constant temperature, the amount of a gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid. It is expressed as C = k_H × P, where C is the concentration of dissolved gas, P is its partial pressure, and k_H is the Henry's law constant specific to the gas-solvent system. This law explains why carbonated beverages go flat when opened (reducing CO₂ pressure) and is essential in understanding gas exchange in biological and environmental systems.

More "H" Terms

Haber Process N₂ + 3H₂ ⇌ 2NH₃ | ΔH = −92 kJ/mol Hafnium Hf Half Cell Half Life Half-Cell E = E° − (RT/nF)lnQ Half-Life A(t) = A₀e^(−λt); t½ = ln2/λ Half-Reaction Halide X⁻ (e.g., F⁻, Cl⁻, Br⁻, I⁻) Halogen F₂, Cl₂, Br₂, I₂, At; Group 17; ns²np⁵ valence configuration Halogenation C-X + Cl₂/Br₂ (hv or AlCl₃) → C-X(halogen); EAS or radical pathway Halogens Hard Acid Hard acid: small, highly charged, low polarisability (e.g., H⁺, Mg²⁺, Al³⁺)

View all "H" terms →