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endothermic reaction is always non spontaneous do you agree with this statement ? justify your answer

A non spontaneous reaction is a reaction that doesnot occur naturally and it normally tends to favor the reactants of a chemical reaction. 
All reactions need some activation energy. With a endothermic reaction it is absorbing energy from its surroundings. So endothermic reactions can be spontaneous if there is sufficient energy in its surrounding but if there is not then it will never happen. 


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