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Question 850004
JEE Chemistry · Medium

States of Matter and Gaseous State: van der Waals equation MCQ

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van der Waals equationMediumQuestion 850004

Question

The van der Waals equation (P + a/V²)(V − b) = RT accounts for:
  1. A
    Intermolecular attractions (a) and volume of molecules (b)
    Correct
  2. B
    Temperature only
  3. C
    Pressure corrections only
  4. D
    Volume corrections only

Correct answer

Intermolecular attractions (a) and volume of molecules (b)

Explanation

van der Waals corrections: (1) 'a' corrects for intermolecular attractions — actual pressure is less than ideal (molecules slow down near walls). (2) 'b' corrects for finite volume of molecules — actual free volume is less than V.

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