Question

is there any reaction which is both endothermic and exothermic give the equation

Answer 1

The heating of Magnesium Ribbon is one example of endothermic as well as exothermic reaction.  

Why is this reaction Endothermic?  

This reaction is endothermic because we have to supply energy to burn the ribbon in presence of oxygen in form of heat energy.  

Why is the reaction Exothermic?  

This reaction is exothermic because it gives energy in form of light energy.  

2Mn+O₂==>2MnO  

•Absorbs heat energy.

•Produces light energy.