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NEET2016ChemistryThermodynamics (C)Actual

Consider the following liquid - vapour equilibrium. L i q u i d ⇌ V a p o u r Which of the following relations is correct?

Options

  1. Ad ln ⁡ G d T 2 = ∆ H υ R T 2
  2. Bd ln ⁡ P d T = - ∆ H υ R T
  3. Cd ln ⁡ P d T 2 = - ∆ H υ T 2
  4. Dd ln ⁡ P d T = ∆ H υ R T 2

Correct answer

D. d ln ⁡ P d T = ∆ H υ R T 2

Step-by-step solution

P = K e - ∆ H / R T ln P = ln ⁡ K - ∆ H R T d d T ln ⁡ P = ∆ H υ R T 2 ∴ d ln ⁡ P d T = ∆ H υ R T 2

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