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NEET Chemistry · Medium

Thermodynamics: Hess law MCQ

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Hess lawMediumQuestion 23029

Question

If a reaction occurs in several steps, total enthalpy change is:

  1. A
    Sum of step enthalpies
    Correct
  2. B
    Product of step enthalpies
  3. C
    Always zero
  4. D
    Always the largest step

Correct answer

Sum of step enthalpies

Explanation

Hess's law permits algebraic addition.

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