14) Which of the following alkenes has the largest molar heat of hydrogenation (

Question

14) Which of the following alkenes has the largest molar heat of hydrogenation (ie, releases the most heat upon hydrogenation)? A) 2,3-dimethyl-2-butene B) 2-methyl-2-butene C) trans-2-butene D) cis-2-butene E) 1-hexene 15) Which of the following alkenes has the smallest molar heat of hydrogenation (ie, releases the least heat upon hydrogenation)? A) 2.3-dimethyl-2-butene B) 2-methyl-2-butene C) trans-2-butene D) cis-2-butene E) 1-hexene 16) Which sequence ranks the following compounds in order of increasing heat of hydrogenation 2 1-butenegydlobesene 1 cis-2-butene A) 3412 C) 2413 D) 132 B) 34241 17) Which of the following compounds is an E isomer? A) C) ab D) B) 18) Predict the major product of the following reaction. A) Dr B) C) D)

Explanation / Answer

14) E ) 1-hexene ( The less stable alkene has highest heat of hydrogenation)

15) A) 2,3-dimethyl-2-butene

16) D

17) B

18) B

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