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Estimate the fraction of molecular volum...

Estimate the fraction of molecular volume to the actual volume occupied by oxygen gas at STP. Take the diameter of an oxygen molecule to be 3 Å.

Text Solution

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`4 xx 10^(-4)`
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The volume occupied by 16g of oxygen at S.T.P.

The density of water is 1000 kg m^(-3) . The density of water vapour at 100^(@)C and 1 atm pressure is 0.6 kg m^(-3) . The volume of a molecule multiplied by the total number gives ,what is called, molecular volume. Estimate the ratio (or fraction) of the molecular volume to the total volume occupied by the water vapour under the above conditions of temperature and pressure.

Knowledge Check

  • The V.D of a gas is 11.2 . The volume occupied by one gram of the gas at STP is

    A
    1.0 L
    B
    11.2 L
    C
    22.4 L
    D
    none of these

  • If the intermolecular forces vanish away, the volume occupied by the molecules contained in 4.5 kg water at STP will be :

    A
    `5.6M^3`
    B
    `4.5M^3`
    C
    `11.2M^3`
    D
    `11.2M^3`

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    What is the molecular weight of the gas, 0.64 gm of which occupies 244 ml at S.T.P.?

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