Question:medium

Hess’s law of constant heat summation is based on:

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Apply Hess’s law to calculate enthalpy changes in multi-step reactions.
Updated On: Jan 17, 2026
  • Zeroth law of thermodynamics
  • First law of thermodynamics
  • Second law of thermodynamics
  • Third law of thermodynamics
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The Correct Option is B

Solution and Explanation

Hess's law, based on the first law of thermodynamics and energy conservation, states that a reaction's total enthalpy change is independent of the pathway taken.
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