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Hess's law is related to ________ of the system.
  • a)
    Free energy change
  • b)
    Entropy change
  • c)
    Enthalpy change
  • d)
    Internal energy
  • e)
    None of these
Correct answer is option 'C'. Can you explain this answer?
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Hesss law is related to ________ of the system.a)Free energy changeb)E...
Hess's law states that the enthalpy or heat energy change accompanying a chemical reaction is independent of the pathway between the initial and final states. ΔH for a single reaction can be calculated from the difference between the enthalpy (heat) of formation of the product and reactant.
ΔH0 reaction = Σ ΔHf0 (products) – Σ ΔHf0 (reactant)
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