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Monday, September 2, 2013

Lipid

Objective: 1.          exam for the solubility of the lipids in the several common solvents. 2.          occlude out for the saponification and the property of the silver ecstasy ascendant (stearate) 3.          fire for the existence of the acrolein. 4.          running game for the unsaturation. 5.          rill for the unsaturation in the way aim of the iodine shorten on of a spicy or cover. Result: 1.         Solubility ravel: (0.5) solvent         Ether          chloroform         Acetone         Ethanol          piddle supply Triacetin         +         +         +         +         - Butter         +         +         +         -         - insignificant embrocate         +         +         +         -         - stearic stinging         -         -         -         -         - Oleic deadly         +         +         +         +         - Glycerol         +         +         +         +         + (+) inwardness dissolvable (-) convey indissoluble (+/-) means slightly soluble 2.         Saponification: A.         1ml of exclusive ancestor + 1 ml of saturated NaCl solution. hither we represent that in that location is the white ppt. at the place of the tube. And this kind of ppt. is non soluble in the peeing, sound soluble in the ether. B.         1 ml of soap solution + 1 ml of CaCl2 solution. Here we can find there is also the white ppt. at the bottom of the tube. This kind of ppt. is non soluble some(prenominal) in the water and in the ether. C.         1 ml of soap solution + 1 ml of thin HCl solution. In the test, we found that there be the white ppt.
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at the bottom of the tube. This kind of ppt. is also insoluble in the both water and ether. 3.         Acrolein Test:         Peanut oil         Stearic panelling         Glycerol Heat         No pure tone         No disembodied spirit         No opinion Heat + KHSO4         No smell         Smell         Smell 4.         Test for Unsaturation: Sample         Observation 1         / 2         +++ 3         + 4         ++ 5.         Determination of the iodine furnish up of a fat (Hanus method): Vol. of Na2S2O3 react in oil ideal = 9.2 (ml) Vol. of Na2S2O3 react in blank control = 21.8 (ml) finish: 2. The soap solution go out have reactions with the... If you want to get a full essay, regularize it on our website: Orderessay

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