Acetic anhydride

Analysis Before I start the experiment, I predicted that all crystal form solutes would dissolve while powder form solutes will not, but my prediction was partially supported. A baking soda was a one that showed an unexpectedly result because even though it is in a powder form, it dissolved in the water. Except for a baking soda, everything could be observed from what I predicted. Sugar and salt, which are in a crystal form dissolved in water and had high solubility while flour and cornstarch, which

Polyvinylchloride is the widely accepted trivial name for poly (1-chloroethene) and, in terms of worldwide production, is one of the three most important polymers in current use, the other two being polyethylene and polystyrene. PVC has numerous uses, including cable insulation, packaging, and toys. PVC has been shown to have a head-to-tail structure. Typical experimental evidence for this is that when dissolved in dioxin and treated with zinc dust, it undergoes a Wurtz-type reaction to yield a

A polymer is a large molecule built up from numerous smaller molecules. These large molecules may be linear, slightly branched, or highly interconnected. In the latter case the structure develops into a large three-dimensional network. The small molecules used as the basic building blocks for these large molecules are known as monomers. For example, the commercially important material polyvinylchloride is made from the monomer vinyl chloride. The repeat unit in the monomer usually corresponds to

Limited Reactants A limited reactant is the first chemical in a chemical reaction to be used up completely. This reactant usually dictates how much of the product can be formed, or the smallest amount of the product that can be formed. To find the limiting reactant, one has to calculate how much of each reactant can produce the product. The reactant with the smallest number is the limiting reactant. Usually when one reactant is completely used up, some of the other reactant is left over, this is

Recrystallization is a technique to purify organic compounds. Both the impurities and the compound are dissolved. The impurities are forced out, and the purified compound is recrystallized. The purpose of this lab is to use the recrystallization method to purify an impure naphthalene compound using methanol. Procedure Naphthalene (1.02 g) and methanol (1.15 mL) was added to an Erlenmeyer flask (25 mL). The mixture was heated using a hot plate. Methanol (30 mL) was placed on the hotplate as well

Experiment 4: Recrystallization of Pure Phthalic Acid, Benzoic Acid, and Naphthalene Charles Nyberg Gilbert Immanuel and Rachel Zigelsky Mussie Gide   Introduction Chemical experiments are often described, when they are finished, by the yield or recovery of the target product or solid. Also melting point can be tested to determine purity in a compound. Most times these chemicals are not completely pure so they can be recrystallized to remove the impurities. The technique of recrystallization learned

INTRODUCTION In this experiment, we have determined the equilibrium concentrations of products and reactants in several organic reactions, involving acetic acid, methanol, methyl acetate, and water. The acid and alcohol react to form an ester and water, and the ester hydrolyzes to produce the acid and alcohol3. These reactions continue in the forward and reverse directions until equilibrium is achieved. The equilibrium constant, K, is a measure of the relation of the activities between products

Production/Synthesis: Synthesis of buprenorphine is accomplished by an 8 step chemical schematic starting with the thebaine, a naturally occurring substance that can be extracted from the poppy plant; the poppy plant is also responsible for natural production of morphine and codeine. The product can also be obtained through the starting material oripavine, which is a major metabolite of thebaine, and is also used to synthesize etorphine. We will go through both methods of transformation, though

showing the reaction that takes place between zinc and iodine using only deionized water instead of acetic acid (or vinegar) as we did in the previous lab by adding acetic acid to zinc iodide. The purpose of this lab was to see how water created the reaction and another compound or precipitate. Focus Question: Zn(OH)2 was the product when zinc and iodine were reacted without the presence of acetic acid in the water. Confidence Report: I am confident that our data in the experiment was “good data”

The purpose of this lab is to determine the quantity of caffeine an unknown sample might contain. In order to successfully determine the amount of caffeine in a sample, several concentration samples are to be made along with its designated blank sample and spiked sample. The technique used in this lab is the HPLC, which stands for, high performance liquid chromatography. This technique is used to separate and identify components such as, sugars and caffeine that might be found in a mixture. Overall