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Relation between vapour density and mole...

Relation between vapour density and molecular weight

A

Molecular weight = 2/Vapour density

B

Molecular weight = 2 `xx` Vapour density

C

Molecular weight `xx` 2 = Vapour density

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Relative molecular mass is the ratio of the mass of one molecule of a substance to the mass 1/12th of a carbon atom, or 1 amu. Vapour density is the ratio of the mass of a volume of a gas, to the mass of an equal volume of hydrogen, measured under the same conditions of temperature and pressure.
Molecular mass = 2 `xx` vapour density
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