The goal of the experiment is to synthesize a bromohexane compound from 1-hexene and HBr(aq) under reflux conditions and use the silver nitrate and sodium iodide tests to determine if the product is a primary or secondary hydrocarbon. The heterogeneous reaction mixture contains 1-hexene, 48% HBr(aq), and tetrabutylammonium bromide and was heated to under reflux conditions. Heating under reflux means that the reaction mixture is heated at its boiling point so that the reaction can proceed at a faster rate. The attached reflux condenser allows volatile substances to return to the reaction flask so that no material is lost. Since alkenes are immiscible with concentrated HBr, tetrabutylammonium bromide is used as a phase-transfer catalyst.
Sodium Bicarbonate mixed with Hydrochloric acid. The chemical reaction observed showed that there was fizzing and bubbling, this is evidence that a new gas was being produced. This new gas, CO2 was generated from the reaction. After the fizzing stopped a liquid was leftover leading me to conclude the liquid leftover leading me to conclude the liquid leftover was the NaCl and H2O 4. You found a sample of a solution that has a faint odor resembling vinegar (an acid).
Experiment 2 Report Scaffold (Substitution Reactions, Purification, and Identification) Purpose/Introduction 1. A Sn2 reaction was conducted; this involved benzyl bromide, sodium hydroxide, an unknown compound and ethanol through reflux technique, mel-temp recordings, recrystallization, and analysis of TLC plates. 2. There was one unknown compound in the reaction that was later discovered after a series of techniques described above. 3.
The last step was the formation of Cu(s). This step recovered Solid elemental copper. Al(s) wire was placed in the solution from the last step and 5 drops of HCl along with a stir bar was added to the beaker and this was stirred on the hot plate. Cu(s) precipitate formed on the wire and the solution turned from clear to cloudy until it eventually become a brownish red color. When the reaction was complete the Al(s) wire was scraped with the stirring rod to get off any residual Copper product.
While one group member set the spectrophotometer to zero, another mixed one enzyme test tube with one substrate tube and observed a change in it’s color. After we set the spectrophotometer to zero, we mixed the second enzyme with the second substrate and promptly poured it into a clean cuvette to then be put in the spectrophotometer and record the absorbance at zero seconds, and again every thirty second for three
Blank solution and oil solution were prepared and stored in the dark. Then, they were titrated with Na2S2O3 and volume of titrant was determined for blank and oil solution. Finally, iodine value was determined by using volumeaof titrant. B) Determination of Peroxide Value In this experiment, peroxide value of sunflower oil was tried to determine. After preparing a solvent mixture, it was titrated with sodium thiosulphate but during titration time color change was not observed.
Being that my |t-calculated| was significantly higher than the critical t value, my hypothesis is supported. According to the data, the T-test results for treatment levels 0 and 100 mL support the class hypothesis, the increase of cupric sulfate will affect the speed of the paramecium cells. As stated by the Hiskey and Maeda (2003), cupric sulfate is a chemical found in plant fertilizer. Thus, based on this data, the conclusion that fertilizer affects paramecium cells can be made. For future experiments, other chemicals found in other substances should be used in replace of cupric sulfate in this experiment, testing the same hypothesis.
The original reaction done by Kolbe involved the formation of sodium phenoxide through the evaporation of a molar equivalent mixture of phenol and aqueous sodium hydroxide. The hygroscopic sodium phenoxide is then heated while carbon dioxide gas is passed over the molten salt. The mixture is then further heated to give the dianion of salicylic acid along with carbon dioxide and phenol both of which distill away from the mixture. Under these
Once AMD reached the coveted pH level, it was filtered using filter paper (0.45 μm) to obtain the precipitate. The filtrates were then measured for the EC level using conductivity meter, TDS level using TDS meter, and concentration of Cu2+ using PerkinElmer Atomic Absorption Spectroscopy (AAS) Analyst 400. All analyses were conducted in Analytical Chemistry Laboratory, University of Mataram. Filtrates (with several pH levels) found to still contain Cu2+, would be treated to the sulfidization treatment. Sulfidization treatment using SNW from Sebau This experiment was conducted by adding pure SNW from three sampling points (T1, T2, and T3) to the AMD with three different pH levels in 1:1 ratio reaction.
These metals have only one electron in their outer shell. This means they are ready to lose that one electron in ionic bonding with other elements. As with all metals, the alkali metals are malleable, ductile, and are good conductors of heat and electricity. The alkali metals are softer than most other metals. Cesium and francium are the most reactive elements in this group.