Question

How can we use experimental data to determine if a reaction is exothermic or endothermic? Discuss how you would measure this physically, and then use what you know about molecular rearrangements during chemical reactions to discuss how you would calculate this value.

Answer 1

molecular rearrangement involves shift of certain groups in the molecule in order increase the stabilty.

Organic molecules undergoes several rearrangements. (primary cation less stable than tertiary cation, hence primary cation prefer to rearrange in order to form tertiary cation.

Cyclic cation (cycloalkane) that has lower number of carbons has some strain in bond angle and bond length, hence, it prefers to form lcyclic system that has large number of carbon.