Benzoic acid

In this experiment, unknown B was a solid mixture containing two compounds of interests, 1,4-dimethoxybenzene and neutral benzoic acid. These compounds were separated by extraction and washing, and liquid-liquid extraction was specifically performed. Extraction is the process by which a compound of interest is selectively removed from impurities, and washing is the process by which unwanted products or impurities are selectively removed from the desired product. In liquid-liquid extraction, unknown B was dissolved sequentially into two immiscible liquids via a separatory funnel. The differences in solubility of the liquid solvents was important because it allowed 1,4-dimethoxybenzene and neutral benzoic acid to eventually separate or extract…

Aims of Experiment 1. To extract benzoic acid from the toluene-benzoic acid mixture, using oxidation-reduction reaction (chemical properties) and difference of solubility (physical properties) –Expt. 1 2. To learn how to recrystallize the solid organic compounds well for getting more purified compounds –Expt. 2 3. To find which differences between raw product and recrystallized product are observed. –Expt. 2 4. To determine melting point range of organic compounds with digital melting point…

This 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,…

Post-lab: 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…

Ferhan Abdullah Thursday, 09 November 2016 Experiment 7 The Separation of Three Organic Compounds by Acid-Base Reactions and Liquid-Liquid Extractions Abstract: The purpose of the experiment was to isolate the three mixtures 9-fluorenone , benzoic acid and benzocaine by the liquid-liquid extraction method and the acid-base reaction technique. Using the acid-base reaction technique, the acid and base are neutralized, producing salt and water. By using the liquid-liquid extraction method, two…

working with very impure benzoic acid. The benzoic acid we were given was made by the 102 chemistry students, meaning that it wasn’t properly made. Students have said that they were rushed and weren’t able to take their time to filter the solid out of the solution. We had to do this for our 102 lab, and I know that our class was being rushed, and it didn’t help that this was the first time working with a funnel filtration. Working with a possible impure benzoic acid is an important thing to note…

In this lab, benzoic acid, benzocaine, and 9-fulorenone are isolated from a three-component mixture by using the acid-base extraction and other following types of various extraction techniques. An acid-base reaction is utilized in order to isolate the individual species from the mixture. First, in isolating the base benzocaine, proton transfers occurred via reaction with hydrochloric acid, which led to a significant shift in the polarity of the said compound, although the conjugate acid of…

Name Institution Course: Instructor Date of Submission Separation (Liquid-Liquid Extraction) Lab Summary The aim of this lab was to separate a mixture of aniline, benzoic acid, and 1,4-dimethoxybenzene by the method of extraction. In this experiment, 7 ml of the mixture was used instead of 10 ml. A portion of this mixture was transferred to another flask to facilitate cooling. Afterwards, 3.5 ml of 12 M hydrochloric acid was added gradually to the mixture. A sample was obtained at a melting…

solubility. For the purpose of this lab, the liquid-liquid extraction technique was used. This method involves using two immiscible solvents, and because of each compounds solubility in each of those solvents, the mixed compounds can separate. Generally, this process includes water as one of the immiscible solvents, but for this lab, t-butyl methyl ether was used to dissolve our mixture. Our mixture was made up of Benzoic acid, p-t-Butylphenol, and Acetanilide. The chemical structure for each…

background The experiment that will be conducted is the preparation of benzoic acid. Benzoic acid is a carboxylic acid and this has been established in the 16th century. The molecular structure of benzoic acid can be seen in the following figure. Figure 1 – Molecular Structure Benzoic acid is used to prepare esters with the very high boiling points and is used as plasticisers. Plasticisers are compounds that are added to plastics to make it softer and…