Experiment

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

This reagent is used as an indicator test for the presence of starch in the solution (1). Biurets reagent is make 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 solu tion is mix with the protein solution and no! tice the change of people 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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