Avogadro's Law
| Formula / Notation | V ∝ n (at constant T and P); V/n = k |
|---|---|
| Also Known As | Avogadro's hypothesis; Avogadro's principle; equal volumes equal moles law; molar volume principle |
What is Avogadro's Law?
Avogadro's law states that equal volumes of all gases, at the same temperature and pressure, contain equal numbers of molecules. Equivalently, the volume of a gas is directly proportional to the amount of gas (in moles) at constant temperature and pressure. This principle forms the basis of the molar volume concept (22.4 L/mol at STP).
Formula & Notation
Other Names / Synonyms: Avogadro's hypothesis; Avogadro's principle; equal volumes equal moles law; molar volume principle
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Avogadro's law states that equal volumes of all gases, at the same temperature and pressure, contain equal numbers of molecules. Equivalently, the volume of a gas is directly proportional to the amount of gas (in moles) at constant temperature and pressure. This principle forms the basis of the molar volume concept (22.4 L/mol at STP).
Calculating gas volumes in chemical reactions; stoichiometry of gaseous reactions; determining molar volumes; relating gas amounts to volumes in industrial processes; foundational principle in gas law calculations
No direct hazard — a gas law relationship. Specific gases involved may be hazardous; always check SDS for gases used.
The formula or notation for Avogadro's Law is: V ∝ n (at constant T and P); V/n = k