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MHT CET Medical202624 April 2026Evening ShiftChemistryThermodynamics (C)Actual

Calculate the work done in the following reaction at 300 K , A (g) + B (g) = 2 C (g) [R = 8.314 JK ⁻¹ mol ⁻¹]

Options

  1. A2.494 kJ
  2. B4.988 kJ
  3. C00 kJ
  4. D-2.494 kJ

Correct answer

C. 00 kJ

Step-by-step solution

The given reaction is A (g) + B (g) 2 C (g) . The change in the number of moles of gaseous species is given by n_g = n_p - n_r . n_g = 2 - (1 + 1) = 0 The work done in a chemical reaction at constant temperature and pressure is W = - n_g RT . Substituting the value of n_g , we get W = -0 8.314 300 = 0 kJ . Answer: 00 kJ

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