1.

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

Answer»

Solution :CHEMICAL reactions that release ENERGY in the form of HEAT, light, or sound are called exothermic reactions.
EX : `C(G)+O_(2)(g) to CO_(2)`+HeatEnergy
Reactions that absorb energy or require energy in order to proceed are called endothermic reactions.
`N_(2)(g)+O_(2)(g) overset("heat") to 2NO`


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