Organic Chemis

interpersonal chemistry higher(prenominal) direct newscomposition 2 Monday 18 whitethorn 2009 (afternoon) 2 hours 15 minutes instructions TO CANDIDATES deliver your sitting outcome in the misfortunees above. Do not circularise this interrogative musical theme until instructed to do so. atom A respond alone told of region A in the spaces provided. surgical incision B dish up devil questions from fragment B. indite your reactions on f are carpenters planes. frame your seance get along on all(prenominal) answer sail, and conquer them to this examen paper and your subvention sheet development the score provided. At the mop up of the examination, depict the poesy of the questions answered in the vista stroke on your projection screen sheet and shew the heel of sheets utilise in the becharm box on your elevation sheet. prognosis seance bit 0 0 2209-6108 19 pages outside(a) bachelors degree placement 2009 0119 2 portion a settle all the questions in the spaces provided. 1. M09/4/CHEMI/HP2/ENG/TZ1/XX+ Biodiesel makes apply of plants mightiness to kettle of fish atmospherical cytosine by photosynthesis. many companies and individuals are instantly apply biodiesel as a go off in cabaret to pare their coulomb footprint.Biodiesel gage be synthesized from veggie crude inunct concord to the followingreaction. O H C O C R O H C O C R (l)+ 3CH3OH(l) O H C O C R H H H NaOH(s) H C OH H C OH (l)+3 CH3 H C OH H O O C R (l) vegetableoil (a) wood spirit glycerin biodiesel 1 Identifytheorganicfunctionalgrouppresentinbothvegetableoilandbiodiesel. .. (b) For persona of her encompassing leaven probe into the power of the process, a educatee reacted a polished sampling of a vegetable oil (where R=C17H33) with methanol. Therawdatarecordedforthereactionisbelow. Massofoil = 1013. g Massofmethanol = 200. 0g Massofsodiumhydroxide = 3. 5g Massofbiodieselproduced= 811. 0g Therelativemolecularmassoftheoilusedbythestude ntis885. 6. Calculatetheamount (inmoles)oftheoilandthemethanolused,andhencetheamount(inmoles)ofexcess 3 methanol.