Solutions_Manual_for_Organic_Chemistry_6th_Ed 73

Solutions_Manual_for_Organic_Chemistry_6th_Ed 73 - 4-20...

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Unformatted text preview: 4-20 continued tl Co + H H-C H2CH3 � -CH3 I 1° radic-al21 kJ/mole (- 5 kcal/mole) =; DJ{0 I'1Ho reaction coordinate .. Si th rmi 3° radi g to e 3° ve f in t n cal, re ng to tohenincef1°erradiatcfalothr.efoactivnatgitohneenergy clealadiisnmorethnegatiraditchalanis lowerorthfoanrmthegacthiev1at°ioradienergyti ilseadiasonable t 4-21 2-Methylmibutxtaune can produceefour mono-ofchydrogens whicTocoulcdullaeade tthoetrelatatproduct timesoftheach in itvhiety ive amount e producttype ofre,hydrogen.y tEach relative amountisdiomers. byh thcale sumtof all hthe amounts wil provireactthe multipl h numbers hloro vided for that of each in the product mixture. de percent DJ{0 3° radic-al50 kJ/mole (- 12 kcaUmole) =; Mlo (6 61°Hrelxat(irveactamount1.0) (3 3.0 relxat(irveeactamount1.0) ivity .6.00) e ivity l 23.5 x 100= 3° ) xl (reactivity 5.5) (2 2°H) x (reactivity 4.5) 23.05 x 100 3. = :5.5 relative amount = 9.0 relative amount 2� � x 100 2�:� x 100 4(a-)22When n-heptane is burned, only 1° and 2° radicals can be formed (from either or bond clisooctane).(2These-trareethihgylhpenergy, beloawbl)eisradicals whiradirapisdlcanforbemfotrmedproducteist.her or eavage ,2,4 im entane, unst burned, 3° ch cal y o her from When reactivbitondSlcloewer combust3°onradianslalastarsetololwer "knocking.th"an 1° or 2°, relatively stable, with lowered y. avage. The i tr c e ess in energy isooctane (2,2,4-tnmethylpentane) Any indicated bond cleavage produce a 3° radical. 2 C H3 I C H3 I C ICH2 - CHCH2CH3 C H3 I C H3 I = C H3 - CHCH2CH2Cl lOH) = C H3-C-CH2CH3 C I C H3· CH· CHCH3 C I = 26% (l H 1 3% = 2 3% = 3 8% C-H C-C C-C C-H C H 3 - � -C - � -CH - C -CH 3 ?+ I JV\ I JV' C H3 H CH 3 CH3 I will 65 ...
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This note was uploaded on 02/27/2010 for the course CHEM 140 taught by Professor Wade during the Spring '10 term at Whitman.

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