Concerning the Relative Stabilities of Alkenes,which Is a False Statement

question 218

Multiple Choice

Concerning the relative stabilities of alkenes,which is a false statement?

• A)Unless hydrogenation of the alkenes gives the same alkane,heats of hydrogenation cannot be used to measure their relative stabilities.
• B)In general,the greater the number of alkyl groups attached to the carbon atoms of the double bond,the greater the stability of the alkene.
• C)The greater the quantity of heat liberated on combustion or hydrogenation of an alkene,the greater its energy content.
• D)trans-Cycloalkenes are always more stable than the cis-isomers.
• E)Heats of combustion can be used to measure the relative stabilities of isomeric alkenes,even though their hydrogenation products are not identical.

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