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VITEEE2017ChemistryThermodynamics (C)

Consider the reaction : N ₂+3 H ₂ 2 NH ₃ carried out at constant temperature and pressure. If H and U are the enthalpy and internal energy changes for the reaction, which of the following expressions is true?

Options

  1. AH > U
  2. BH < U
  3. CH = U
  4. DH =0

Correct answer

B. H < U

Step-by-step solution

H = U + nRT for array l N ₂+3 H ₂ 2 NH ₃ n _ g =2-4=-2 array H = U -2 RT or U = H +2 R T U > H

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