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NEET2011ChemistryThermodynamics (C)Actual

Enthalpy change for the reaction, 4 H (g) 2 H ₂(g) is -869.6 ~kJ The dissociation energy of H - H bond is

Options

  1. A-869.6 ~kJ
  2. B+434.8 ~kJ
  3. C+217.4 ~kJ
  4. D-434.8 ~kJ

Correct answer

B. +434.8 ~kJ

Step-by-step solution

array ll 4 H (g) & 2 H ₂(g) ; H=-869.6 ~kJ 2 H ₂(g) & 4 H (g) ; H=869.6 ~kJ H ₂(g) & 2 H (g) ; H= 869.6 2 =434.8 ~kJ array

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