Thin Layer Chromatography Submitted in partial fulfillment of the requirements for: CHE 324 Organic Chemistry Laboratory Dr. Robert Duncan Fall Semester 2012 Caitlin Inman‚ Team Leader October 9‚ 2012 Tyler Byrd‚ Data Collection Shared Role‚ Technique Expert Introduction: “Chromatography is used to separate components of a mixture. For example‚ imagine a mixture of wood pieces‚ pebbles‚ and large rocks to be separated and the chromatography setup as a stream. Flowing water
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hybridisation C–C bond length 1.15 4 A0 Chemically unreactive Show chain‚ position and optical isomerism. Heptane has 9 isomer‚ Octane 18 and Decane 75. Nomenclature: 164 Preparation:- Wurtz reaction:- Follow mainly free radical mechanism Useful in preparing an alkane containing even number of carbon atoms Stepping up reaction Frankland reaction From Grignard reagent (RMgX) From unsaturated hydrocarbons:- Sabatier-Senderens reduction 4. From carboxylic acids- Decarboxylation
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Rgt/Pdt | Structure | Physical Properties | Hazards | acetone | | Physical State: LiquidAppearance: colorlessBoiling Point: 56.20CMelting Point: -95.30CDensity: 0.79 g/cm3 | Causes eye and skin irritation. May cause central nervous system depression. May cause liver and kidney damage. Causes respiratory tract irritation. Extremely flammable. | aniline | | Physical State: LiquidAppearance: oily - colorlessBoiling Point: 1840CMelting Point: -60CDensity: 1.0216 g/cm3 | Combustible. Hazardous in
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Vegetative reproduction (vegetative propagation‚ vegetative multiplication‚ vegetative cloning) is a form of asexual reproduction in plants. It is a process by which new individuals arise without production of seeds or spores. It can occur naturally or be induced by horticulturists. Although most plants normally reproduce sexually‚ many have the ability for vegetative propagation‚ or can be vegetatively propagated if small pieces are subjected to chemical (hormonal) treatments. This is because meristematic
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Panacetin‚ a type of pain-killer. Panacetin is typically made up of sucrose‚ aspirin‚ and acetaminophen‚ but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen‚ either acetanilide or phenacetin. Using techniques such as extraction‚ evaporation‚ and filtration‚ the three components will be isolated based on their solubilities and acid-base properties. Then‚ the percent composition of Panacetin can be deduced based on the masses
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Experiment 1: separating components of a counterfeit pharmaceutical Aim Counterfeit pharmaceuticals are a big concern regarding the issue of medicines due to fake versions containing either the wrong ingredients or inaccuracy of the active ingredient which can cause toxicity issues in patients using these products. The aim of this experiment
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exam 20% Final exam o Exams will be over lab and lecture material. You may use your lab reports during the midterm and final Format of prelab: 1. Title of experiment 2. Abstract A short description of the experiment 3. Include reactions (with mechanism) if applicable. 4. Structures of reactants and products. (only organic compounds) http://www.sigmaaldrich.com Wikipedia also has information on chemical compounds but it is community maintained‚ so double check the information. 5. Table of physical
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2-naphthol‚ and naphthalene. These organic solids are purified by partitioning the solid in 2 immiscible solvents‚ diethyl ether and sodium bicarbonate or sodium hydroxide. II. Significance a. The significance of the Extraction lab is to purify Acetanilide benzoic acid‚ 2-naphthol‚ and naphthalene by determining the partition coefficient. This value is determined by dividing the solubility of the given solute in the extraction solvent (Sodium bicarbonate or Sodium hydroxide)) by the solubility in
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Unsaturated Hydrocarbons Unsaturated hydrocarbons Have fewer hydrogen atoms attached to the carbon chain than alkanes. Are alkenes with double bonds. Are alkynes with triple bonds. 1 Structure of Alkenes Alkenes (and alkynes) are unsaturated hydrocarbons Alkenes have one or more double bonds The two bonds in a double bond are different: - one bond is a sigma () bond; these are cylindrical in shape and are very strong - the other is a pi (π) bond; these involve sideways overlap of
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This experiment focuses on the concept of electrophilic aromatic substitution‚ which is a type of benzene reaction. This reaction consists usually of benzene and an electrophile. The role of the nucleophile is played by the double bond on the benzene ring. IT will react will the electrophile and this reaction will form a carbon cation intermediate. With additional reactions with a base‚ the electrophile fundamentally replaces the hydrogen of the benzene. Benzene is classified as one of the countless
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