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NEETChemistryThermodynamics (C)

Match the column I with column II and mark the appropriate choice. ( array |l|l| & Column I & & Column II (P) & H ₂+ Br ₂ 2 HBr & (i) & H= U-2 R T (q) & PCl ₅ PCl ₃+ Cl ₂ & (ii) & H= U+3 R_T (r) & N ₂+3 H ₂ 2 NH ₃ & (iii) & H= U (s) & 2 ~N ₂ O ₅ 4 NO ₂+ O ₂ & (iv) & H= U+R T array )

Options

  1. A(p)-(iii), (q)-(i), (r)-(ii), (s)-(iv)
  2. B(p)-(iii), (q)-(iv), (r)-(i), (s)-(ii)
  3. C(p)-(ii), (q)-(i), (r)-(iv), (s)-(iii)
  4. D(p)-(iv), (q)-(ii), (r)-(i), (s)-(iii)

Correct answer

B. (p)-(iii), (q)-(iv), (r)-(i), (s)-(ii)

Step-by-step solution

(p) Δ n g = 2 - 2 = 0 ; hence Δ H = Δ U (q) Δ n g = 2 - 1 = 1 ; hence Δ H = Δ U + R T (r) Δ n g = 2 - 4 = - 2 ; hence Δ H = Δ U - 2 R T (s) Δ n g = 5 - 2 = 3 ; hence Δ H = Δ U + 3 R T

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