Determination OF Stability || Heat OF Hydrogenation and Heat OF Combustion

Hyperconjugation in Alkenes|| Stability OF Alkenes|| Heat OF Hydrogenation|| Heat OF Combustion||Hyperconjugation in Carbocation and Stability Comparison||Hyperconjugation in Free Radicals and stability comparison

Comparison OF Heat OF Hydrogenation (HOH)|| Heat OF Combustion (HOC) ||Electron Density||OF Benzene

The heat of combustion is

Hydrogenation of unsaturated hydrocarbons is an exothermic reaction. Due to hyperconjugation and resonance the stability of unsaturated hydrocarbons increases and the increase in stability is more due to resonance. Compound with same number of pi- bonds and more stability has lower heat of hydrogenation. Heat of formation is defined as the energy evolved when a molecule is formed from its atoms. For isomers the more stable compounds has higher heat of formation. The order of heat of formation of the following molecules is :

(I) Stability order and (II) heat of hydrogenation orders.

(I) Stability order and (II) heat of hydrogenation orders.

Heat OF hydrogenation ||Heat OF combustion || Application OF conjugation

(GOC) : stability OF carbanion and free radicals,hyperconjugation in alkenes stability,heat OF hydrogenation

Give the decreasing order of the stability of the following or increasing order of heat of combustion. (I)

The gas with the highest heat of combustion is :