SN1 vs SN2 Reaction | Which is Exothermic and Which is Endothermic?

SN1 vs SN2 Reaction: Which is Exothermic and Which is Endothermic? 🔥❄️ In this chemistry lecture, we discuss the energy changes involved in SN1 (Unimolecular Nucleophilic Substitution) and SN2 (Bimolecular Nucleophilic Substitution) reactions. Many students preparing for NEB Class 12, CEE, IOE, B.Sc., JEE, and other competitive examinations are confused about whether SN1 and SN2 reactions are exothermic or endothermic. 🎯 In this video, you will learn: ✅ Energy profile diagram of SN1 reaction ✅ Energy profile diagram of SN2 reaction ✅ Why carbocation formation in SN1 requires energy ✅ Activation energy and transition state concept ✅ Exothermic vs Endothermic reaction analysis ✅ Factors affecting the energetics of nucleophilic substitution reactions ✅ Important MCQs and exam-oriented concepts