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MHT CET20192 May 2019Morning ShiftChemistryThermodynamics (C)Actual

Calculate the difference between heat of combustion of carbon monoxide gas at constant pressure and at constant volume at 27 o C ? R = 2 c a l K - 1 m o l - 1

Options

  1. A54 c a l
  2. B- 600 c a l
  3. C- 300 c a l
  4. D27 c a l

Correct answer

C. - 300 c a l

Step-by-step solution

C O g + 1 2 O 2 g → C O 2 g Δ n g = 1 - 3 2 = - 1 2 We know that Δ H - Δ E = Δ n g R T Δ H - Δ E = - 1 2 × 2 × 300 = - 300 c a l

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