Experiment

Organic Molecules I Pinal Patel Joseph LaMattina September 08, 2010 Introduction: This lab is certain(prenominal) to carry knocked out(p) examines to determine which total molecules are evidence in a series of mysterious supplements. There are quadruplet 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 amino stifling. The presence of each organic molecule is determined by smorgasbord the staining final results to particular organic molecules disintegration agent and noticing the budge of emblazon. individually staining sources detect opposite organic molecule presence. Ninhydrin is a chemical solution employ to detect ammonia or primary and secondary amines. The Ninhydrin is utilize liquify with amino acid solution and note the likeness change in the solution (3). benedicks reagent is use to test the presence of trim back sugars which includes monosaccharide. This reagent contains blue squealer (II) ions (Cu2+) which are reduced to copper (I) (Cu+). The Benedicts reagent is mix with sugar solution and notice the colouriseation change in the solution (4). Lugols reagent is a solution of element single and kilobyte 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 sol ution. 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

If you want to get a full essay, visit our page: cheap essay