Benzoic acid

accomplish the task? What techniques were used to purify and identify the product(s) of the reaction? In this experiment, an acid-base extraction was done to separate a mixture of an unknown acid and fluorene, a neutral compound. The possible unknown acids were 2-chlorobenzoic acid, 3-chlorobenzoic acid, and 3-methylbenzoic acid. The purification of the isolated unknown acid was performed by recrystallization and its identity was established by analyzing the melting point range of the pure product

Percent Recovery was calculated by taking the total amount of grams collected and dividing it by the amount of grams initially started with and multiplying that number by 100. Phthalic Acid: (.15g / .20g) * 100 = 75% Benzoic Acid (Water): (.03g / .05g) * 100 = 60% Benzoic Acid (Methanol): (035g / .05g) * 100 = 70% Naphthalene: (.532g / 1g) * 100 = 53% Discussion After the process of recrystallization was completed, the melting points and weights were taken for each solid. Some melting points recorded

Experiment 4: Recrystallization of Pure Phthalic Acid, Benzoic Acid, and Naphthalene Charles Nyberg Gilbert Immanuel and Rachel Zigelsky Mussie Gide   Introduction Chemical experiments are often described, when they are finished, by the yield or recovery of the target product or solid. Also melting point can be tested to determine purity in a compound. Most times these chemicals are not completely pure so they can be recrystallized to remove the impurities. The technique of recrystallization learned

carboxylic acid component from an unknown mixture in order to determine their identities by performing melting point and 1H NMR analyses on each individual element. Results, Discussion, and Conclusions Unknown sample 207 was analyzed in this experiment. Using acid/base chemistry, certain components were moved to the aqueous layer at each step in order to separate the amine, carboxylic acid, and neutral parts from each other. First, the basic amine was protonated with 5% HCl, a strong acid. This protonation

In experiment 2, we used liquid-liquid extraction to separate a mixture using two immiscible solvents. We made use of extraction, back extraction, neutralization, and melting point technique to figure out the identity of the acid, base and neutral from the combined unknown mixture. There were a couple things that we had to pay close attention to. For example, identifying the organic and aqueous layer as liquid-liquid extraction is usually used to separate organic product from the mixing with the

when using the solid-liquid and liquid-liquid extraction techniques to extract a strong acid, weak acid, base, and neutral compound from a mixture. During the solid-liquid section of the experiment, 0.5 M NaHCO , 0.5 M NaOH, 0.5 M HCl, and distilled water are used to dissolve and separate the acid, phenol, and amine solutions from the mixture, leaving the neutral compound remaining. After adding 3 M HCl to the acid and phenol solutions and3 M NaOH to the amine solution, the solutions and solids formed

COMPARATIVE STUDY OF THE PROPERTIES OF ORGANIC COMPOUNDS THROUGH VARIOUS TESTS Johanna Lynne La Rosa, Denise Gianelli Lopez, Anna Reyzell Lundang, Marlon Mallillin III and Jacinto Mari Manual Group 5 2E Pharmacy Organic Chemistry Laboratory ABSTRACT Organic compounds have been subjected to comparative investigation to differentiate the behaviour of one from the other. The physical state at room temperature, odor and color of the samples were noted by simple observation. The samples are classified

either 2-chlorobenzoic acid, 3-chlorobenzoic acid, or 3-methyl benzoic acid was used. NaOH, diethyl acetate, and HCl were also used. 2. Which reactions occurred between those reagents? Why was the experiment performed? " The unknown acid was deprotonated by NaOH and protonated by HCl. The experiment was performed to separate the unknown acid from fluorene and to identify the unknown. 3. List the methods used to separate, purify, and determine the identities of the products. " Acid-base extraction, recrystallization

ACYL COMPOUNDS: SOAPS AND DETERGENTS Experiment # 8 I. Objectives  To observe the general properties of carboxylic acids.  To compare the acidity of carboxylic acids and phenols.  To verify experimentally the interconversion among acyl compounds.  To become familiar with the physical and chemical properties of fats and oils and to understand the chemical basis of these properties.  To learn how to prepare soap.  To compare the properties of soap and synthetic detergents. II. Data and

Introduction Acid-base extraction is a very useful technique in organic chemistry. It is used to separate organic compounds from each other. The idea is that most of organic compounds will be more soluble in organic solvents than they are in water (1). The extraction, in its most basic form, will result in unequal distribution of solute between two immiscible (not forming one mixture when added together) solvents (2). Since both of the solvents are immiscible, two separate layers will be formed