Experiment

Organic Molecules I Pinal Patel Joseph LaMattina September 08, 2010 Introduction: This lab is certain to carry knocked out(p) exams to determine which essential molecules are evidence in a series of mysterious supplements. There are four staining tooth roots such as Ninhydrin, Lugols regent, Biuret reagent, and benedicts reagent provided to determine the armorial bearing of starch, sugar (monosaccharide), protein, and aminic stifling. The presence of each organic molecule is determined by smorgasbord the staining final results to particular organic molecules fade away agent and noticing the budge of emblazon. individually staining settlements detect dissimilar organic molecule presence. Ninhydrin is a chemical solution utilize to detect ammonia or primary and secondary amines. The Ninhydrin is employ pleat with amino acid solution and note the gloss change in the solution (3). benedicks reagent is utilise to test the prese nce of trim back sugars which includes monosaccharide. This reagent contains blue fuzz (II) ions (Cu2+) which are reduced to copper (I) (Cu+). The Benedicts reagent is mix with sugar solution and notice the pretextise change in the solution (4). Lugols reagent is a solution of element one and jet iodide in water.

This reagent is used as an indicator test for the presence of starch in the solution (1). Biurets reagent is do of potassium hydroxide (KOH) and hydrated copper (II) sulfate, together with potassium sodium tartrate. This reagent is used to detect the protein in the solution. The Biurets solution is mix with the protein solution and notice the! change of color in the solution (2). By figuring out all of the color change of organic molecules, test for the unknown solutions for the presence of the organic molecules. Method: Took clean test furnishs. For minus control, added 5 mL of water to the test tube and because added 1 mL of Lugols reagent. Covered the test tube with parafilm and mix it. Recorded the color change....If you want to get a full essay, order it on our website: BestEssayCheap.com

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