Molar Volume
| Formula / Notation | V_m = 22.414 L/mol (ideal gas at STP); V_m = M/ρ (liquids/solids) |
|---|---|
| Also Known As | Molar volume, V_m, specific molar volume, 22.4 L/mol (STP approximation) |
What is Molar Volume?
The volume occupied by one mole of a substance. At STP (0°C, 1 atm), one mole of an ideal gas occupies 22.4 L. At standard conditions (25°C, 1 bar), the molar volume is 24.8 L. Molar volume of solids and liquids varies considerably from substance to substance.
Formula & Notation
Other Names / Synonyms: Molar volume, V_m, specific molar volume, 22.4 L/mol (STP approximation)
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
The volume occupied by one mole of a substance. At STP (0°C, 1 atm), one mole of an ideal gas occupies 22.4 L. At standard conditions (25°C, 1 bar), the molar volume is 24.8 L. Molar volume of solids and liquids varies considerably from substance to substance.
Molar volume is used in: gas law calculations, converting between moles and volume of gases, comparing packing efficiency of solids (partial molar volumes in solutions), designing gas storage systems, and in electrochemistry (volume changes during electrode reactions).
No direct safety concern for the concept. The large molar volume of gases (>22 L/mol) compared to liquids (
The formula or notation for Molar Volume is: V_m = 22.414 L/mol (ideal gas at STP); V_m = M/ρ (liquids/solids)