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Chemistry · Glossary

What is Molar volume?

Definition 25.18 School Chemistry — Grades 1 to 12 · Chapter 25 — The Mole and Molar Mass

The molar volume VmV_m of a gas is the volume occupied by one mole of that gas, at a given temperature and pressure. It is expressed in litres per mole (L/mol\mathrm{L}/\mathrm{mol}).

Three balloons at 20\, C, each holding one mole of a different gas. The volumes are the same; the masses are not.
Three balloons at 20 ∘C20\,{}^{\circ}\mathrm{C}, each holding one mole of a different gas. The volumes are the same; the masses are not.
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