मराठी
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10

Vapour Density and Its Relation to Relative Molecular Mass

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Topics

  • Definition: Relative Vapour Density
  • Definition: Molar Volume
  • Formula: Relative Vapour Density
  • Formula: Mole in Terms of Volume
CISCE: Class 10

Definition: Relative Vapour Density

The ratio between the masses of equal volumes of gas (or vapour) and hydrogen under the same conditions of temperature and pressure.

CISCE: Class 10

Definition: Molar Volume

The molar volume of a gas is the volume occupied by one gram molecular mass or simply, by one mole of the gas at S.T.P. It is equal to 22·4 dm3.

CISCE: Class 10

Formula: Relative Vapour Density

The relative molecular mass of a gas or vapour is twice its vapour density.

2 × Rel. V.D. = Rel. molecular mass of a gas or vapour.

CISCE: Class 10

Formula: Mole in terms of Volume

One mole of a gas = 22·4 litres at S.T.P.

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