Define heat of hydrogenations

1.	Define heat of hydrogenations
Answer» Heat of hydrogenation (symbol: ΔHhydro, ΔHº) of an alkene is the standard enthalpy of catalytic hydrogenation of an alkene. Catalytic hydrogenation of an alkene is always exothermic. Heat of hydrogenation of alkenes is a measure of the stability of carbon-carbon double bonds.

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