0.157g of a certain gas collected over water occupies a volume of 135ml at 270C and 750mm of Hg . Assuming ideal behaviour, the molecular weight of the gas is (aqueous tension at 270C is 26.7 mm of Hg )

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Detailed Solution

Pgas=Pmoist.gas−aqueous tension =750−26.7 =723.3 mm =723.3760atm M=WRTPV =0.157×0.0821×300723.3760×1351000 =30

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