IB Chemistry 1.5 1.5.3
1.5.3
Structure 1.5 SL & HL ⏱️ ~4 min revision

Molar Volume

Molar gas volume at STP (22.7 dm³ mol⁻¹) and gas volume stoichiometry calculations.

For Gases, volume relies only on Temperature and Pressure, not the type of gas.

Standard Temperature & Pressure (STP)
22.7
dm³ mol⁻¹
273 K | 100 kPa

Formulas

Find Moles

\( n = \frac{V}{22.7} \)

Find Volume

\( V = 22.7 \times n \)

Try the Gas Law Calculator

See how changing pressure, volume, and temperature affect each other with our interactive calculator.

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