Question

write definition and equection of exothermic redion and endothermic reaction​

Answer 1

An exothermic reaction occurs when the temperature of a system increases due to the evolution of heat. This heat is released into the surroundings, resulting in an overall negative quantity for the heat of reaction (qrxn<0). ... Endothermic reactions result in an overall positive heat of reaction (qrxn>0)

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Answer 2

Answer:

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An exothermic reaction occurs when the temperature of a system increases due to the evolution of heat. This heat is released into the surroundings, resulting in an overall negative quantity for the heat of reaction (qrxn<0). ... Endothermic reactions result in an overall positive heat of reaction (qrxn>0).