Nitration of Acetanilide Introduction When organic compounds are nitrated it changes the composition and reaction of the compounds.[4] We could benefit from these changes‚ nitration of acetanilide produces a product called p- Nirtoanoline. P-Nitroaniline is commonly used as an intermediate in the synthesis of dyes‚ antioxidants‚ pharmaceuticals and gasoline. P-Nitroaniline is also used in gum inhibitors‚ poultry medicines and as a corrosion inhibitor. [2] Nitration is a type of chemical
Premium Benzene Sulfuric acid Nitration
Abstract This experiment is about the synthesis of 3-nitrobenzaldehyde through nitration. The nitration of benzaldehyde is an example of an electrophilic aromatic substitution reaction‚ in which a proton of an aromatic ring is replaced by a nitro group. Many aromatic substitution reactions are known to occur when an aromatic substrate is allowed to react with a suitable electrophilic reagent‚ and many other groups besides nitro may be introduced into the ring. Although the reaction produced a low
Premium Electrophilic aromatic substitution Nitration Benzene
solute / kg solvent METHODS Part 1 : Determination of the Freezing Point of Naphthalene 1. A clean and dry test tube was weighted. 2. About 5 g naphthalene was added to the test tube and weighted again. 3. The naphthalene was melted by using a water bath. 4. The test tube with melted naphthalene was transferred from the water bath‚ dried and clamped it on a retort stand. 5. The liquid naphthalene was stirred continuously so that no temperature gradient develops and the temperature
Premium Freezing-point depression Melting point
Introduction The purpose of the experiment was to determine the melting points of compounds using a Mel-Temp device. The melting point of naphthalene‚ urea‚ and sulfanilamide are found. This is then followed by the measuring of an unknown compound‚ and an impure sample (a small amount of naphthalene mixed with the unknown). Experiment In the lab‚ the height of the chemical in the capillary was set to 2-3 mm thickness. The voltage at the Mel-Temp started at a low setting of 1.5-2. The heat was
Premium Temperature
electrophile in the nitration reaction‚ will attack the benzene ring and produces the nitrobenzene ring. Resonance-stabilized arenium ion is created when the nucleophilic carbon pi bond on the acetanilide reacts with the nitronium ion. The aromaticity of the compound is lost in this important step. Water‚ acting as the Lewis base‚ removes a proton from the carbon bonded to the nitro group‚ an aromatic benzyl structure is created again: nitroacetanilide; thus ending the nitration reaction (1). Next
Premium Sulfuric acid
Preparation of methyl m-nitrobenzoate by nitration using methyl benzoate‚ nitric acid‚ and sulfuric acid Aileen Quintana TA: Sijie Tues/Thurs 11:50 42067 Introduction: The purpose of this lab was to explore the concepts of electrophilic aromatic substitution‚ specifically nitration by synthesizing methyl m-nitrobenzoate using methyl benzoate‚ nitric acid and sulfuric acid. This nitration is a type of electrophilic aromatic substitution. A
Premium Benzene Electrophilic aromatic substitution
EXPERIMENT #1: THE PURITY AND PURIFICATION OF SOLIDS MELTING POINTS ABSTRACT Melting points of different mixtures of naphthalene and biphenyl were examined in this lab. Samples of these various mixtures were collected and tested by different individuals in the lab in order to find the eutectic point of biphenyl. Unknown substances were then tested using the mixture melting point method in order to determine their identities. INTRODUCTION The melting point of a solid is the temperature
Premium Chemical substance Mix Temperature
the substances physical properties can be shown. A salicylic acid-naphthalene mixture was mixed together with diethyl ether and saturated sodium bicarbonate. Two layers separated and were extracted after acidifying with HCl. This precipitated the crude salicylic acid. The left over mixture was combined with water and the two layers separated where crude naphthalene was recovered. Sublimation was used to purify the naphthalene. Sublimation is the process when a solid evaporates from a warm surface
Premium Melting point Diethyl ether Temperature
4-nitroaniline had a percent recovery of 18.67% and naphthalene had a percent recovery of 80%. Naphthalene had a relatively high percent recovery‚ and the loss of product can be explained by error inherent. The low percent recovery of 4-nitroaniline is mainly due to the fact that anhydrous sodium sulfate was accidently added to the flask. Therefore‚ some product was lost as the aqueous solution with the protonated 4-nitroaniline reacted with the drying agent. However‚ more errors to explain the results
Premium Chemistry Yield Benzene
Resolving and Determining the Percentages of Naphthalene‚ NaCl and SiO2 in a Mixture with the use of Separation Techniques Castro‚ Sarleen G.* Cid‚ John Emmanuel V.‚ Clemente‚ Christian Joy G. Group 5‚ 1CHEM‚ Department of Chemistry‚ College of Science‚ University of Santo Tomas‚ España‚ Manila‚ 1015 August 24‚ 2012 Abstract A mixture can be homogenous or heterogenous‚ depending if the mixture has been uniform throughout the mixture or not. One of the objectives is to separate C10H8‚ NaCl and
Premium Chemistry Evaporation Water