Q15 / 170 · Manipal (MET) 2016 · Chemistry

In van der Waals' equation of gaseous state, the constant ' $b$ ' is a measure of

  • Correct answer
    A
    volume occupied by the molecules
  • B
    intermolecular repulsions
  • C
    intermolecular attraction
  • D
    pressure correction

Solution

van der Waals' equation for 1 mole of a real gas is $\left(p+\frac{a}{V^2}\right)(V-b)=R T$ where, $b$ is volume correction. It arises due to effective size of molecules.

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

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