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MHT CET20249 May 2024Evening ShiftChemistryThermodynamics (C)Actual

Identify the factor from following on which heat of reaction does not depend.

Options

  1. APhysical states of reactants and products.
  2. BTotal number of steps in which reaction occurs.
  3. CTemperature of the reaction.
  4. DWhether the reaction is carried out at constant pressure or constant volume.

Correct answer

B. Total number of steps in which reaction occurs.

Step-by-step solution

The correct answer is (B) Total number of steps in which reaction occurs. The heat of reaction (also known as enthalpy change, H ) depends on several factors, but the total number of steps in which a reaction occurs (i.e., whether the reaction occurs in one step or multiple steps) does not affect the heat of reaction. According to Hess's Law, the enthalpy change of a reaction is the same, regardless of the number of steps in which the reaction occurs, provided the initial and final states of the system are the same

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