Question #20b20

1 Answer
A08
Jan 23, 2017

One mole of gas will have number of molecules #=6.022xx10^23 " molecules"#
Also standard molar volume of a gas at STP is #=22.4l#

Using above two relationships the occupied volume per molecule of gas at STP (which is not same as the volume of a molecule)#=(22.4xx10^3)/(6.022xx10^23)approx3.72xx10^-20cm^3#

  1. It is true for all gases.
  2. It is also assumed that the molecules are evenly distributed. Therefore, each molecule occupies an imaginary box having this volume at STP.
Related questions
See all questions in Molar Volume of a Gas
Impact of this question
1686 views around the world
You can reuse this answer
Creative Commons License