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JEE Main2004ChemistryThermodynamics (C)Actual

The enthalpies of combustion of carbon and carbon monoxide are -393.5 and -283 ~kJ ~mol ⁻¹ respectively. The enthalpy of formation of carbon monoxide per mole is

Options

  1. A110.5 ~kJ
  2. B-110.5 ~kJ
  3. C-676.5 kJ
  4. D676.5 ~kJ

Correct answer

B. -110.5 ~kJ

Step-by-step solution

array ll C + O ₂ CO ₂ & H =-393.5 ~kJ 2 CO +1 / 2 O ₂ 2 CO ₂ & H =-283 ~kJ 2 C + O ₂ 2 CO & H =-110 ~kJ array

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