NEET Chemistry · Hard

Thermodynamics: Bond enthalpy MCQ

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Bond enthalpyHardQuestion 23083

Question

If total bond enthalpy of reactants is 1500 kJ and of products is 1700 kJ, reaction enthalpy is:

  1. A
    -200 kJ
    Correct
  2. B
    +200 kJ
  3. C
    3200 kJ
  4. D
    0

Correct answer

-200 kJ

Explanation

ΔH=15001700\Delta H = 1500 - 1700.