Q8 / 118 · NTA Abhyas (NEET) 2020 · Chemistry · States of Matter

In van der Waal's equation of state of the gas law, the constant ‘b’ is a measure of

  • A
    intermolecular attraction
  • B
    intermolecular repulsions
  • C
    intermolecular collision per unit volume
  • Correct answer
    D
    volume occupied by the molecules

Solution

Van der Waal's equation for one mol of a gas is given as
P+aV2V-b=RT
Where b is volume correction. It arises due to finite size of gaseous molecules.The constant ‘b’ is a measure of volume occupied by the molecules. It is actually four times of molar volume of gas molecule.

Hence, the correct answer is option: 'D'.

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