Respuesta :
Answer: Activation energy = 10 kJ
enthalpy change = -25 kJ
Explanation:
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and [tex]\Delta H[/tex] for the reaction comes out to be negative.
Given : Potential energy of the reactants = 30 kJ
Potential energy of the products = 5 kJ
Maximum energy of the system = 40 kJ.
Activation energy is the extra energy that must be supplied to reactants in order to cross the energy barrier and thus convert to products.
Activation energy = Maximum energy of the system - Potential energy of the reactants = (40-30) kJ =10 kJ
Enthalpy change = Potential energy of the products - Potential energy of the reactants =(5-30) kJ= -25 kJ

Answer:
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Explanation:
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