Question

​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​

Answer 1

ANSWER

Diameter (size) of oxygen molecule =3A˚

Radius of oxygen molecule, r=23A˚=1.5×10−10m

Therefore, volume of 1 mole of oxygen gas at S.T.P

   =34πr3×N

   =34×π×(1.5×10−10)3×6.0225×1023

   =8.514×10−6m3=8.514×10−3 litre

Fraction of the molecular volume occupied =22.48.514×10−3=3.8×10−4

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Answer 2

HERE IS YOUR ANSWER

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