Benzoic acid

The Recrystallization of Benzoic Acid through solubility and filtration. Summary: An ideal solvent of 95% Ethanol was determined from the given solvents of water, 95% ethanol and hexane. Once the ideal solvent was determined a recovery of 27% or 0.54 grams of Benzoic Acid from 2.0 grams of crude Benzoic Acid mix using the 95% ethanol. The product was a white crystalline solid that produced a melting point range of 116-120 C compared to the actual range of 121-123 C meaning that a small amount of

Quantification of Caffeine and Benzoic Acid in Mountain Dew Using HPLC Jordan Carey 1 UNF Dr, Jacksonville Fl 32246 Abstract The regulation of contents in beverages is important for the health and safety of the public. The chemicals caffeine and benzoic acid are common additives to beverages for the stimulation effect and as a preservative, respectively. To simultaneously determine the amount of each of these chemicals, a method combining UV/Visible spectroscopy and reversed-phase high performance

mixture of Benzoic acid, Benzocaine, and Fluorenone. Because the ratio is 1:1:1, that means all of the components are equally weighted in the total weight of the mixture. Since the starting weight of the 1:1:1 heterogeneous mixture was 0.618 g, you can assume that the 0.618 g is made up of the three components each weighing 0.206 g. This came from dividing the starting weight by 3, since there are three components. As shown in the percent recovery calculations above the percent recovery of benzoic acid

In this lab, extraction was use as method for separating a mixture of compounds. Specifically, Benzocaine and Benzoic Acid were individually isolated from a starting mixture which consisted of both components. A percent recovery was found for both. The percent recovery found for the benzocaine was 1%, while the percent recovery for benzoic acid was 35%. These low percentages are result of errors during the experiment. One source of error was during the separation of layers. When separating the two

The purpose of this experiment was to determine the resonance energy of benzene. 0.512g of benzoic acid was used to do a combustion reaction which was completed during a period of 10 minutes as shown in figure 1 below which was created using table 1 below. The change in temperature during this combustion reaction was found to be 1.45K. Table 1: Change in temperature during the combustion of benzoic acid. Time (min) Temp. ( ̊C) Time (min) Temp. ( ̊C) 0 23.12 6 23.15 1 23.13 7 24.15 2 23.14 8 24

Title:Extraction:Extraction with acid and alkaline Objective: 1. To recover benzoic acid and p-dichlorobenzene from its mixture using acid-alkaline extraction. 2. To determine the percentage recovery and melting point of benzoic acid and p-diclorobenzene. Apparatus:Separatory funnel(250mL),Buchner funnel,beaker. Materials:Benzoic acid,p-dichlorobenzene,ether,10% NaOH,conc.HCl,distilled water, anhydrous CaCl2. Introduction: Organic compounds in an aqueous mixture can be separated

Introduction The purpose of this lab was to purify a compound of benzoic acid through the process of recrystallization. This was done in a couple steps, first dissolved the product to be recrystallized in hot solvent then filtered off impurities, then filtered to isolate the crystals from the recrystallizing solvent [1]. For this method to work there were many different theories that play a role, one of the theories is solubility. Solubility is a chemical property that a solute is able to dissolve

inorganic species. The specific substance being tested first, is the organic compound benzoic acid. The objective of the first set trials is to acquire data which can be used to determine the best solvent for the recrystallization of benzoic acid. Next, potassium permanganate, an inorganic salt, will be dissolved in a variety of organic solvents, with the aid of phase transfer agents. First, the solubility of benzoic acid was tested. Four solvents, water, ethanol, acetone and hexanes, were used in an

is to practice common organic laboratory techniques inside the lab to get one oriented to the basic methods of procedure that can be used for later experiments. This experiment involves the separation of benzoic acid from a more crude form, consisting of benzoic acid, methyl orange, a common acid/base indicator, and cellulose, a natural polymer of glucose (Huston, and Liu 17-24). The technique that is used to perform this separation is called extraction. Extraction is a systematic process of separating

Potassium sorbate is of a greater concern as compared to the other two, sorbic acid and calcium sorbate who have allergies to potassium affecting the renal and kidney. Nonetheless, the maximum allowable limit for sorbates is only 0.1%. The effect of sorbates is observed at least 0.5%.