Acids

this experiment was the contamination of the chromatography paper by foreign amino acids. Any amino acids that our gloves came in contact with throughout the lab transfered over to the chromatography paper and appeared as purple spots, mostly on the border of it. Conclusion- The amino acids in unknown mixture A were Glycine and Valine. The amino acids in unknown mixture B were Glycine and Leucine. The amino acids in unknown mixture C were Lysine and Prolise. Questions- The markings from a…

Recrystallization of benzoic acid Calculations: I initially poured 1.10 grams of impure acid into my flask. After the experiment was done, I had 0.54 grams of pure benzoic acid. This gives a difference of 1.10-0.54=0.56 g and a percentage of (0.54/1.10)*100=49.09% The true melting point of pure benzoic acid is 122.41°C and I received 126.9°C as my melting point. This gives a difference of 126.9°C-122.41°C=4.49°C and a percentage of (122.41/126.9)*100=96.46% Results: Impure benzoic acid…

The formation of benzilic acid results from the reaction of benzil with ethanol and potassium benzilate. In order to produce benzil, benzoin was reacted with nitric acid. A crude product of benzil was produced from the reaction of benzoin and nitric acid. Through the process of multi-step synthesis, benzil was produced through the oxidation of an alpha-hydroxyketone to an alpha-diketone using nitric acid. Prior to the reaction of nitric acid and benzoin, nitric acid was protonated to form an…

of fatty acids, amino acids that contain sulphur and nucleic acids. The amount of hydrogen ions that in the body can be regulated in many different ways: Acid base buffer systems are located in body fluids and are chemicals such as the buffer phosphate system and the protein buffer system. The function of the respiratory system is to regulate the rate and depth of breathing and helps to regulate hydrogen ion concentration. It is very essential that the body regulates body fluids. An acid is a…

rate is magnesium and hydrochloric acid. Initially, it was hypothesized that the reaction with hydrochloric acid would have the fastest reaction rate due to its high acidity observed from the pH scale. From there, the following reactions were based on the pH of the acid involved as well as the concentration of hydrogen ions/atoms within the acid molecule. As a result, it was hypothesized that the sulfuric acid reaction would be the second fastest and the acetic acid reaction would be the…

various concentrations of nitric acid in different samples of cyanobacteria of equal masses. My hypothesis is that acid rain will greatly affect the growth of cyanobacteria. The higher the acidity level of the water, the less the cyanobacteria will grow. I chose this topic because due to human activities, many different chemicals have been released into the air and they changed the mixture of gases in our atmosphere, hence resulting in a dramatic increase of acid rain levels. Pollution and…

Abstract This experiment investigates the effect that acid rain (simulated by altering the pH of the water using 0.5 molar Hydrochloric acid) has on the photosynthetic rate of the aquatic plant Egeria densa. For this experiment I used a dissolved oxygen probe to measure the dissolved oxygen content of the water with an altered pH. By tracking the dissolved oxygen content of the water I was able to monitor the photosynthetic rates of the plants with the knowledge that high levels of dissolved…

Acetylsalicylic Acid from Salicylic Acid Shultz, Joshua T. Chemistry 2210L Data Figure 1. Esterification of Salicylic Acid to Yield Acetylsalicylic Acid Figure 2. Acetyl Group Table 1. Reference Data, Experimental Volumes, Yields, and Melting Points Melting Point of Salicylic Acid 158° C Melting Point of Acetylsalicylic Acid 138° C - 140° C Initial Mass of Salicylic Acid 0.510 g Theoretical Yield of Acetylsalicylic Acid 0.665 g Experimental Yield of Acetylsalicylic Acid 0.524 g…

experiment was conducted to practice a variety of techniques in organic chemistry: separation, mechanisms, acid-base reactions, evaporation, recrystallization, and identification. The goal of this experiment was to identify the unknown mixture of two compounds. The two compounds were separated first by altering the acid components solubility through deprotonation, and then protonating the acid component again to form the separated precipitate. The ether in the neutral layer was evaporated, and…

Introduction Acid rain is a rain that contains a high concentration of pollutants, chiefly sulfur dioxide and nitrogen oxide, released into the atmosphere by the burning of fossil fuels such as coal or oil .It can have harmful effects on plants, aquatic animals and infrastructure, when the sulfur dioxide and nitrogen oxide, react with the water . The chemicals in acid rain can cause paint to peel, corrosion of steel structures such as bridges, and weathering of stone buildings and statues.…