Lab 9 -quiz - anyurlt‘ Lee I mtg macmlllan tram mg...

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Unformatted text preview: anyurlt‘ Lee. I mtg macmlllan tram mg Limonene and eugenol are natural products. Drag and dro the labels that describe these two essential oils into the appropriate boxes below their structures. Not all la els will be used. / / H o W \\\u. \ I eugenol limonene acetyl ooenzyme A precursor isopentyl diphosphate precursor aoetogenin terpe ne alkaloid steroid r 9 water. Use data tram the table to calculate the mole fraction 0! eugenol in the digstillate. J enuu, me essent- mm m uuves, wu ue usumteu uy sienn- ulaulluuull uewuse It Is Ilrwluurc m water I has a much higher or Ing point than water. Use data from the table to calculate the temperature at which a ixture of eugenol and water will boil. Water Molar 1B g/mol mass Boiling point Vapor 760 mmHg 4 mmHg pressure at 100 °C Eugenol 164 g/mol Slightly more than 100 'C Significamly less than 100 ”C. Slightly less than 254 ‘C. Slightly less than 100 'C. Significantly more than 100 “C but less than 254 'C. eugenol essenua. u" .qu .u m uwes, euge. .u- \suuwu ueuuw,, can ue leuld|=u uy steal .. unsuuauuu wuau== u .s luble in water and has a measurable vapor pressure at 100 °C even though it has a much higher boiling nt than water. Use data from the table to calculate the mass percent at eugenol In the distillate. lfraction water eu enol lat mass percent ofeu enol will eu enol a We“, in me dig...“ _ME-_ Molar mass 13 g/rnol 154 glmol 18 glmol Botllng potnt 100 C 254 C Number Vapor pressure 760 mmHg 4.0 mmHg Vapor pressure at 100 ”C /0 / HO / eugenol FIInAnnI “we .s we “ewe. WWW. mm... mange pea. we... me ....=..,. wow... V. we way“... u. "Humane bromine under the conditions shown. Stereochernistry is not required. excessBrz fl . Br Br limonene Jnder the conditions shown, what mechanism is in effect? Electrophilic aromatic substitution. Nucleophilic substitution. Radical bromination. Electrophilic addition. 0000 Correct. W permanganate V WW 'clohexene J J x nonene J J x W \/ \f f h Br; and HCI undergo electrophilic addition to alkenes, Why is Biz) used as a test tor unsaturation insteac iCl? HCI is more expensive than Brz. HCI is more toxic than Era. The reaction with bromine can be followed bewuse of a visible loss oi color. The reaction speed with bromine is slower than with HCI. n @ View Previous 9 View Solution @ Wew Next fl nain reason for using bromine instead of hydrochloric acid as theunstauration test is because the us phySIcal change that happens dunng the reactlon thch Is a vIsIbIe loss of color. u u-ue- lU penuuua ulu If the lollowing results w ates. on a wmpuunu, u must ue ueateu mm a uuule smut-on m mun-me. mm;- dlcate the presence of an alkene’! The tom-ration ol a white precipitate. The deep purple color of the bromine will disappear. A deep purple color of the bromine that does not fade. The reddish color of the bromine will disappear. “.0" View Previous @ View Solution é Wew Next fl imine test is an eflective method for identiging the dpresence o1I alkenes and alkynes. For this test, a solutiot lining three drops of a compound is treate With a ilute solution of bromine. The reddish color of the ine will disappear for a positive test result. ethyl acetate water Top layer Bottom layer water dichloromethane...
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