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Frequently Asked Question
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A thermochemical equation must essentially contain the following except: i. be balanced ii. Give the value of Δu or Δh corresponding to the quantities of substances given by the equation iii. Mention the physical states of the reactants and products iv. Mention the rate constant.
Accepted Answer
The correct answer is IV. Mention the rate constant. Here's why:
Thermochemical equations focus on the heat changes (enthalpy) associated with chemical reactions. They don't directly deal with reaction rates, which are the domain of chemical kinetics.
I. be balanced: Essential for stoichiometric relationships and accurately representing the amounts of reactants and products.
II. Give the value of ΔU or ΔH: The core of a thermochemical equation, indicating the internal energy or enthalpy change for the reaction.
III. Mention the physical states of the reactants and products: Important for understanding reaction conditions and enthalpy calculations.
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