Chemistry Essay Examples Page 32

Introduction The purpose of the experiment was to oxidize and identify an unknown alcohol using hypochlorite, or household bleach. During the experiment, the bleach oxidized the secondary unknown alcohol into a liquid ketone which was distilled or boiled to find the boiling point and then identified using a chart of unknown identities and boiling points….

Paracetamol is ill soluble in cold H2O, but more so in hot H2O. One portion of paracetamol is soluble in 70 parts of H2O at room temperature, and 1 in 20 parts in boiling H2O. The aqueous solubility is elsewhere reported as 14.7 mg.ml-1 at 20A°C, 14.3 mg.ml-1 at 25A°C and 23.7 mg.ml-1 at 37A°C.[…

Part I: Separate a mixture of known cations: Pb2+, Fe3+, Al3+, Cu2+, and Ca2+ into individual ions. Perform a series of tests to become familiar with reactions characteristic of each cation. Part II: Separate and identify individual cations in an unknown solution containing a mixture of up to five cations. Use information gathered in part…

Genomic DNA extraction from bacteria isolate was performed by who shows that Bacillus and Pseudomonas species have the maximum capacity to degrade oil but gave upper hand advantage to Bacillus species. Shows the presence of Alcaligens odorans, Bacillus subtilis, Corynebacterium propinquum and Pseudomonas aeruginosa in petrochemical refinery wastewater. The researcher positively collated high pollutant reduction…

The purpose of this experiment is to see if vanillin can be synthesized to vanillyl alcohol through reduction with sodium borohydride. If the mixture does not dissolve after 5 minutes of continuous stirring add another 5 mL NaBH4 and cool the solution to just below 15°C. In a small beaker dissolve 12.0 mmol of NaBH4…

Polyphenol Oxidase enzyme activity can be detected by change in colour of solution, Inhibitors prevent the reaction of the enzymes with substrates, the enzyme is relatively specific. Aim: To design and conduct an experiment to demonstrate enzyme activity of Polyphenol Oxidase and Peroxidase when mixed with catechol, caffeic acid, pyrogallad, tyrosine, guacol, and water, to…

IntroductionIn this lab I observed the burning of a candle very closely. I found out that the candle needs oxygen to burn, that it produces carbon dioxide similar to the way that my body produces carbon dioxide, and that a candle produces water as a second waste product. I learned that if I hold an…

Vitamin C is an essential nutrient that can be found in various foods and is also produced as dietary supplements by chemical companies. It plays a crucial role in treating scurvy and is widely utilized in the cosmetics industry due to its antioxidant properties. However, many individuals, including medical professionals, are unaware of the dual…

From the literature, I propose to design a redox-active ligand, their transition metal complexes and then to determine the molecular, electronic structure, and applications of such complexes and finally to systematically investigate the redox-driven reactivity properties at the metal sites. During this work, organic as well as inorganic synthesis, separation, purification and characterization of organic/inorganic…

VI. RESULTS AND DISCUSSION Aspirin is prepared by the esterification of salicylic acid with acetic anhydride under acidic conditions. The phenol group in salicylic acid is replaced by a carboxyl group through electrophilic substitution. The mechanism for the reaction can be summarized as follows: Figure 11.4. Mechanism for the reaction of salicylic acid and acetic…