Question

What does one mean by exothermic and endothermic reactions ? Give examples.​

Answer 1

Answer:

reaction in which heat energy is liberated by the reactants is called exothermic reaction. eg: Carbon + Oxygen gives Carbon Dioxide + Q. reaction in which heat energy is absorbed by the reactants is called endothermic reaction.

eg: Nitrogen + Oxygen gives 2 nitrous oxide (2NO) - Q.

Explanation:

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. An example of an exothermic reaction is the mixture of sodium and chlorine to yield table salt.

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Answer 2

Explanation:

exothermic reaction is a reaction in which heat is released.

endothermic reaction is a reaction in which heat is absorbed.