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Saturday, October 26, 2013

Lipid

Objective: 1.          exam for the solubility of the lipids in the several commonality solvents. 2.          block out for the saponification and the property of the liquid ecstasy ascendent (stearate) 3.          attempt for the existence of the acrolein. 4.          demonstrate for the unsaturation. 5.         Test for the unsaturation in the demeanor determination of the iodine get along of a toothsome or oil. Result: 1.         Solubility Test: (0.5) solvent          diethyl ether         Chloroform         Acetone         Ethanol          urine Triacetin         +         +         +         +         - Butter         +         +         +         -         - earth-ball oil         +         +         +         -         - stearic stinging         -         -         -         -         - Oleic acid         +         +         +         +         - Glycerol         +         +         +         +         + (+) internality dissolvable (-) means insoluble (+/-) means slightly soluble 2.         Saponification: A.         1ml of soap upshot + 1 ml of saturated NaCl ascendant. present we found that there is the neat ppt. at the bottom of the tube. And this class of ppt. is not soluble in the water, just soluble in the ether. B.         1 ml of soap solution + 1 ml of CaCl2 solution. Here we can find there is overly the white ppt. at the bottom of the tube. This kind of ppt. i s not 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 are 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 acid         Glycerol heating plant         No pure tone         No smell         No smell Heat + KHSO4         No smell          reek         Smell 4.         Test for Unsaturation: Sample         Observation 1         / 2         +++ 3         + 4         ++ 5.         Determination of the iodine add up of a fat (Hanus method): Vol. of Na2S2O3 controvert in oil ideal = 9.2 (ml) Vol. of Na2S2O3 react in blank control = 21.8 (ml) Conclusion: 2. The soap solution will have reactions with the... If you want to get a across-the-board essay, order it on our website: OrderEssay.net

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