chapter 20 extraexercises
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biology classmatesTRANSCRIPT
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i*{F Fr{?}ii2E. Draw candensed structural formrfas for pen-
tane and hexane. .Assume tlrat rbe C-H andC-C bonds are understood- 25.1
20. Name the alkanes that have the following mol-ecular or structural formrlas' 25.1
35, Give a systematic name for these alkenes' 25'2
a. CH3CH:CH2b. cH3. ,H\n-
^/,zu-t\H CH,CH3
c. CH3CHCHzCH:CHzI
CH
7G8 Chapter2S
. cH3cH2cH3 I 3'b. cHtcHz)scH, rl[fur*+t'itl,t
HHHHH i"'lliil ithe,c. H-C-C-C-C-C-F 'iT I T T i -- e''honennn *rrb
E, L,fr3\ /Unzun3,rt-t\CH CHzCH3
. CHr:161r69,I
CH2CH3
Draw a structural formula for eathe molecular formula C5H16. Nrpound.25.2Draw all the stmctural isomers molecrla formtda Cull14. Name(For converdence, You maYwislthe cabon skeleton fo each strDraworre structural isomerof acompound.25.3
CH"t-a. cH3-cH-cH3
I
CHs
CH.I
b. cH3-cH-cH-cH3I
CH2I
.Lv 5
CHA CHSl"ic. CH._CH_CH,_C}I_CHtlII
cH2 czllcl{3 cH3
3. Draw a stnctural formula or ca
t. 2-methyl-2-pentenet. 3-ethyl-2-pentene
tll. Show how lack of rotation abol'Qt'kn
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n-&n you draw a suuctural isomer of bexanetf*Urnl thathas an aEYemetric cabon? 25'3t3i"* o roo.*t* for each compound' 25'4a. p-diethYlbenzeae. 2-methYt-3-PhenYlPentane,e. p-xylened. t0luene&uin rurry oth of these structues represeilt
CHZCH
CH2CH3
1, 2-diethYlbenz ene. 25.4
fi,.\CH,CH3\\y'\cH,cH3iri
" "r, "qo",ion for the complete combus-
, tioa of octane {CB}IId.25.5l{** *uru *ounals in oder of increasing: hardness: bituminous coal. peat, ligrrite' and
antlEacite coal.25.5i*"u., tlr. chemical struure of coal' 25'5How does the amount of sulfur in coal affect its,r, poteutial use? 25.5
i*iipT },lA51lftY'.:For eacb hydrocarbon picrured below' identiS,.1 tt
"
,yp" oiu"nding and name the compound'
(b)#l,..
::..'
ltil
i8. Y{rite $tru$ural fornulas fcr the foowingcomPounds,a, propyfreb. cyclohexanet. 2-PhenYlProPanert. 2,2,4-aimett4{Pertnea. 2,3-dimethfpentanel. 1,l-dtPhenYlhexane
51, Name the aert three higher horrologs ofethane.
52, Draw electron dot strucnues for eachco*Pound.a.ethene e. ethYne!.ProPane d-cYclobutane
53, Compare ese three molecular structues'Wbicbwould you expectto be most stable?whv?
l_i"--4
5il. The seven organic chemicals produced in theI iffi ffi HIHTL$""T:ffi # ;'j*I ioUowing questions based on the data given'
mounl Pralt*tllnnical (liiBs st f)Ethylene I 15'9Proovbne i 8'4urel I 68EttrVtene dichloride | 6'3eztnt i 5 sEitytbenzen. I 43yinrcnroroe i 37
a. How many trillion kilograms of aromaticcomPounds were Produced?
. Of the total mass of all seven compoundsproduced, what prcent bymass wa madeup of aliPhatic comPounds?
S, Are these nTo structure geometric isoners?Explain
CHs. C}tz H,. ,Htc:cl ,c:c,
H/ tH cH; tH,