Sulfuric acid

the other three liquids. It was expected that whichever combination of liquid and black solid formed a blue solution would be H2SO4 and CuO hence, CuSO4 in solution. On identification of sulphuric acid, the following tests were performed expecting the evolution of carbon dioxide on reaction of the acid with carbonates. Therefore, among the soluble solids, (10) exhibited effervescence and was suspected to be sodium carbonate due to its solubility. The powders and crystals were divided…

nitrobenzoate even if it has little different melting point from the literature melting point which is 7880°C. Conclusion/Discussion: During the electrophilic aromatic substitution reaction between methyl benzoate and a nitrating solution of sulfuric and nitric acids, the Meta-Methyl nitrobenzoate product was obtained based on the product melting point range. Percent yield of the crude 56.42% and the percent yield of the recrystallized product was 52.59%. This would indicate that during the…

A important tests were performed on the product to pressure the results: melting point value, percent yield, IR, and TLC. The experimental melting point value was found to be a range of 165-167 ºC being a little lower than the literature value for camphor, the intended product, was 175 ºC. The sharp range was resulted in a slightly pure product. The percent yield was lower than expected which can be the reason most of the product was lost during the extraction and almost completely sublimated…

the group tried to dissolve all the beginning substances and finished products in a multitude of solvents. In the testing of the four starting substances for the soaps, the group found that all the substances were insoluble in water and hydrochloric acid. However, vegetable oil was soluble in sodium hydroxide whereas the rest of the substances were not. This proposes that the beginning substances for the soaps are non-polar organic materials, as shown on page 59 of the lab manual1. Then, they…

quantity taken for amino acid analysis. Diluted hydrochloric acid was used for Free amino extraction. Nitrogenous macromolecules that were co-extracted were precipitated using sulfosalicylic acid and removed by filtration. A mixture of performic acid and phenol was used for Oxidation at 0°C. Hydrolysates of the sample were then adjusted to pH 2.2 using 7.5M sodium hydroxide sol. Amino acid analyzer based on ion exchange chromatography was used to separate amino acids. Amino acids were…

percentage amounts of ethanol in them; Listerine, Terra Fresca Wine and the last is a mixture of ethanol and water that was made by me. The three different methods compared are the redox titration method which involves the oxidation of ethanol to ethanoic acid and then titrating the residue with sodium thiosulfate, which would then be used to calculate the number of moles of ethanol present in the original sample. The method of distillation involves heating the samples to the boiling point of…

The purpose of this experiment was to prepare a benzocaine, by direct Fisher esterification of p-aminobenzoic acid with ethanol in the presence of sulfuric acid as catalyst. Equations Percent Yield= (mass product obtained)/(mass therotical ) X 100 Results Table 1: Percent yield of crude benzocaine, its melting point and comparison with literature value Melting Point Melting Point Range Percent Yield 82.9 °C – 84.5°C 1.6 59.3% Discussion The weight of the final product was 0.086 grams. The…

a 25-mL round-bottomed flask along with a stir bar. To dissolve the camphene, 3.0 mL of glacial acetic acid was added into the flask. The flask was fastened onto a ring stand and immersed in a water bath that was on top of a stir plate. A thermometer wire was placed in the water bath to monitor the temperature throughout the experiment. After the camphene dissolved, 0.50 mL of 8 M sulfuric acid (H2SO4) was added. To prepare for heating, a cork was placed upside down to cap the mixture and…

The Issue of Acid Rain - SHE Task Jessie Zeitz Introduction In the 21st century, the use of cars, electricity, and coal burning power stations are being used more than ever before. This is making the issue of acid rain more and more relevant to today's society. As acid rain is not talked about much in the news, many people are not informed about it. Without it being publicly addressed much, people will not know the intensity of the situation and how bad this problem is. In Australia between the…

oxygen3. Serratia Marcescens is a gram negative bacterium. Gram negative bacteria have a thin cell of a single layer of peptidoglycan that is enclosed by an outer membrane. The outer membrane is surrounded by special phospholipids composed of fatty acids called lipopolysaccharides that are attached to a glucosamine…