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NEETChemistryThermodynamics (C)

Match List-I with List-II. List-I (Reaction) List-II (Relation) (A) H₂(g) + Br₂(g) 2HBr(g) (I) H > U (B) N₂O₄(g) 2NO₂(g) (II) H = U (C) N₂(g) + 3H₂(g) 2NH₃(g) (III) H Choose the correct answer from the options given below:

Options

  1. AA-II, B-III, C-I
  2. BA-I, B-II, C-III
  3. CA-II, B-I, C-I
  4. DA-II, B-I, C-III

Correct answer

D. A-II, B-I, C-III

Step-by-step solution

The relationship between enthalpy change ( H ) and internal energy change ( U ) is given by H = U + n_g RT . For reaction (A): H₂(g) + Br₂(g) 2HBr(g) n_g = 2 - (1 + 1) = 0 . Therefore, H = U . (A matches II) For reaction (B): N₂O₄(g) 2NO₂(g) n_g = 2 - 1 = 1 . Since n_g > 0 , H > U . (B matches I) For reaction (C): N₂(g) + 3H₂(g) 2NH₃(g) n_g = 2 - (1 + 3) = -2 . Since n_g Answer: A-II, B-I, C-III

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