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JEE Advanced2012ChemistryStates of MatterActual

For one mole of a van der Waal's gas when b=0 and T =300 ~K , the PV vs, 1 / V plot is shown below. The value of the van der Waal's constant a (atm. liter ² ~mol ⁻² ) is :

Options

  1. A1.0
  2. B4.5
  3. C1.5
  4. D3.0

Correct answer

C. 1.5

Step-by-step solution

array l (P+ a V² )(V)=R T P V+a / V=R T ; P V=R T-a(V) y=R T-a(x) array So, slope =a= 21.6-20.1 3-2 = 1.5 1 =1.5

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