Van der Waals equation for a gas is stated as,
$p = \frac{nRT}{V - nb} - a\left( \frac{n}{V} \right)^2$
This equation reduces to the perfect gas equation,$p = \frac{nRT}{V}$,when:

  • A
    temperature is sufficiently high and pressure is low
  • B
    temperature is sufficiently low and pressure is high
  • C
    both temperature and pressure are very high
  • D
    both temperature and pressure are very low

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