Question

8/ Explain exothermic reaction with comple.​

Answer 1

Answer:

An exothermic reaction is a "reaction for which the overall standard enthalpy change ΔH⚬ is negative."[1][2] Exothermic reactions usually release heat and entail the replacement of weak bonds with stronger ones.[3][4] The term is often confused with exergonic reaction, which IUPAC defines as "... a reaction for which the overall standard Gibbs energy change ΔG⚬ is negative."[2] A strongly exothermic reaction will usually also be exergonic because ΔH⚬ makes a major contribution to ΔG⚬. Most of the spectacular chemical reactions that are demonstrated in classrooms are exothermic and exergonic. The opposite is an endothermic reaction, which usually takes up heat and is driven by an entropy increase in the system.

Explanation:

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Answer 2

Answer:

Exothermic reaction is the reaction that releases energy either in the form of heat or light . In exothermic reactions energy is released as the total mass of the products is less than the total energy of the reactants

For example

1. respiration

2. combustion

3 .nuclear fission of uranium 235

Best example

break down of glucose

C6H12O6 + 6O2 give rise to 6CO2+6H2O+ENERGY