hydrogenation

[Mstoothlady2012]

If an alkene is really stable doesnt it need more heat to break apart the double bond? hence it will need high heat of hydrogenation right?

more stable = more heat of hydrogenation

can some1 check if this is right or not? thanks

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[TermiNadder2012]

absolutely correct. If you have for example a benzene ring, the amount of energy to remove one hydrogen would be incredible because the benzene ring is so stable and removal of the hydrogen would make the ring very unstable. If you compare that to a cyclohexene it would be considerably less where the cyclohexene --> cyclohexyne.

 

[whoaaitzkyle]

If an alkene is really stable doesnt it need more heat to break apart the double bond? hence it will need high heat of hydrogenation right?

more stable = more heat of hydrogenation

can some1 check if this is right or not? thanks

No.

The more substituted an alkene = more stable = LOWER heat of hydrogenation and heat of combustion.

 

[anonymuz]

No.

The more substituted an alkene = more stable = LOWER heat of hydrogenation and heat of combustion.

agreed

 

[Mstoothlady2012]

k thanks guys!! appreciate it