The total enthalpy of the products in a reaction is 0 kJ, and the total enthalpy of the reactants is 100 kJ. What is the ΔH for the reaction? Choose the correct answer. –393.5 kJ –100 kJ 0 kJ +100 kJ

-100 kJ

Explanation:

Heat of reaction or enthalpy of the reaction is the energy released or absorbed during the course of the reaction.

Heat of reaction is represented by the symbol .

= enthalpy of reaction = ?

= enthalpy of products = 0 kJ

= enthalpy of reactants = 100 kJ

Thus the ΔH for the reaction is -100kJ

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