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MHT CET202416 May 2024Morning ShiftChemistryThermodynamics (C)Actual

The enthalpy of vaporisation of a liquid is 30 ~kJ ~mol ⁻¹ and entropy of vaporisation is 75 JK ⁻¹ ~mol ⁻¹ . Calculate boiling point of liquid at 1 atm .

Options

  1. A250 K
  2. B400 K
  3. C450 K
  4. D600 K

Correct answer

B. 400 K

Step-by-step solution

aligned & S = H T ( At constant pressure of 5 ~atm ) & 75 ~J ~K ⁻¹ ~mol ⁻¹= 30 10^3 Jmol ⁻¹ ~T & ~T = 30000 Jmol ⁻¹ 75 JK ⁻¹ ~mol ⁻¹ & ~T =400 ~K aligned

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