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).
The different amount energies released results in different color. This reason is the same reason that different elements have different line spectra. The quantum theory says that a certain amount of energy has be released or absorbed and Bohr 's said the same but with restrictions. The quantum theory would explain the vast differences in energy in color. The reason atoms need heat is because heat gives the atoms energy which causes them to move to an excited and then back to ground state.
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.
In this experiment, racemic 2-methylcyclohexanone was reduced using sodium borohydride as a nucleophile to give a diastereomeric mixture of cis and trans secondary alcohols. The products were analyzed for purity using IR spectroscopy and gas chromatography. 1.2 g of 2-methylcyclohexanone and 10 mL of methanol were combined in a flask and cooled in an ice bath. Two 100 mg portions of sodium borohydride were added to the flask and stirred. 5 mL of 3M sodium hydroxide, 5 mL of de-ionized water, and 15 mL of hexane were added to the reaction flask and stirred.
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.
2. FORMATION OF HYDRAZONE FROM ESTER Materials required: * The ester which was synthesized in the previous reaction. The total weight of ester obtained was 230mg. * Methanol – 20 ml * P-toluene sulfonylhydrazide (1.2 equivalent ) Procedure: * The ester was transferred in a round bottom flask and it was mixed with about 20ml of methanol and stirring was done on a magnetic stirrer till the ester dissolves in it completely. * In the above RB, a calculated amount of 1.2 equivalent amount of PTSH was added during continous stirring.
Abstract In this experiment, the reaction kinetics of the hydrolysis of t-butyl chloride, (CH3)3CCl, was studied. The experiment was to determine the rate constant of the reaction, as well as the effects of solvent composition on the rate of reaction. A 50/50 V/V isopropanol/water solvent mixture was prepared and 1cm3 of (CH3)3CCl was added. At specific instances, aliquots of the reaction mixture were withdrawn and quenched with acetone. In addition, phenolphthalein was added as an indicator.
Chloroacetic acid (0.5 g, 5. 28 mmol), 5-aminotetrazole monohydrate (0.45 g, 5. 28 mmol), and sodium hydroxide (0.59 g, 10.57 mmol) in 10 ml of water was refluxed 20 hr, cooled, and made strongly acidic with concentrated hydrochloric acid. The mixture was cooled overnight and precipitate was separated to give 0.28 g a white solid product at 45.41% yield. (5-Amino-tetrazol-1-yl)-acetic acid: Yield: 45.41%; white crystals; m.p 210-213°C; IR (KBr): 3388, 3315, 3270, 3205, 3010, 2976, 1697, 1638, 1586, 1496, 1257 cm-1; 13C NMR (75 MHz (DMSO-d6)): 168, 156,
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.
Alka-Seltzer tablets are used to treat headaches, stomach and body aches and also heartburn. They consist of citric acid (C6H8O7), baking soda (NaHCO3), and aspirin (C9H8O4). The fizzing observed is a result of a chemical reaction between the citric acid and baking soda which form carbon dioxide in turn causing the fizzing. When the tablets are dropped into water they dissolve and dissociate into the ions in the equation: C6H8O7 (s) → 3H+ (aq) + C6H5O7 3- (aq). Once hydrogen and the baking soda ions bump into each other, they form carbonic acid (H2CO3).