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CBSE Class 10 Answered

difference between endothermic and exothermic reaction with examples?
Asked by | 23 Aug, 2012, 09:57: PM
answered-by-expert Expert Answer
Firstly, an exothermic reaction is one in which heat is produced as one of the end products.  Examples of exothermic reactions from our daily life are combustion like the burning of a candle, wood, and neutralization reactions. In an endothermic reaction, the opposite happens. In this reaction, heat is absorbed. Or more exactly, heat is required to complete the reaction. Photosynthesis in plants is a chemical endothermic reaction.

In exothermic reactions the enthalpy change is always negative while in endothermic reactions the enthalpy change is always positive. This is due to the releasing and absorption of heat energy in the reactions, respectively. The end products are stable in exothermic reactions. The end products of endothermic reactions are less stable. This is due to the weak bonds formed.

      endothermic reaction pe diagram: 
Answered by | 25 Aug, 2012, 03:59: PM
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