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Chemistry
OpenStudy (anonymous):

Can someone help me with Chemistry? I need some help. Which reactions are endothermic?

OpenStudy (anonymous):

OpenStudy (chmvijay):

when deta H of the reaction it is called endothermic reaction!!!!if it is negative it is called exotermic reaction!!!!

OpenStudy (anonymous):

if u are not provided delta H then by this u can identify by looking reaction... A.. all endothermic rexn are dissociation reaction but this rexn is excptn u have to learn it 1/2N2 + 1/2 O2-----> NO2 etc B. all formation reaction is exothermic reaction here also this is exception NO2-------->1/2 N2 + 1/2 O2 etc. there are more exceptions for both reaction but these are famous exmaples most commonly asked

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