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Q.

Define the standard molar volume of a gas

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Detailed Solution

The standard molar volume of a gas is the volume of one mole of gas at STP (standard temperature and pressure), which is 22.4 liters.

  • STP = 0°C (273 K) and 1 atm pressure.
  • According to Avogadro’s law, all gases at STP have the same molar volume.
  • 1 mole of any gas = 6.022 × 1023 molecules = 22.4 liters.

Formula

Molar Volume = Volume of Gas ÷ Number of Moles

Example

1 mole of oxygen gas at STP = 22.4 L. Similarly, 1 mole of hydrogen also = 22.4 L.

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