Which mathematical expression represents the heat of reaction for a chemical reaction in terms of potential energy, PE?
Aug 27
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Regents Chemistry June 2026
19 Which mathematical expression represents the heat of reaction for a chemical reaction in terms of potential energy, PE?
(1) (PE of products) + (PE of reactants)
(2) (PE of products) * (PE of reactants)
(3) (PE of products) - (PE of reactants)
(4) (PE of products) / (PE of reactants)
Solution:
The heat of reaction is calculated by taking the potential energy of products and subtracting the potential energy of reactants from it. Choice 3 is the correct answer choice.
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