BROMINATION OF ACETANILIDE OBJECTIVE Aim of the experiment was too brominate acetaldehyde to form p-bromoacetanilide. INTRODUCTION Acetanilide is a chemical compound with the chemical formula of C6H5NH(COCH3). It is a crystalline solid that is prepared by acetylation of analine and is widely used in the dye industry. This crystalline solid is an odourless solid chemical that has a flake or leaf like appearance. It is also known as N phenylacetamide‚ acetanil or acetanilide. Its former
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decline of about 4% per decade in the total volume of ozone in Earth’s stratosphere (the ozone layer)‚ and a much larger springtime decrease in stratospheric ozone over Earth’s polar regions. The latter phenomenon is referred to as theozone hole. In addition to these well-known stratospheric phenomena‚ there are also springtime polartropospheric ozone depletion events. The details of polar ozone hole formation differ from that of mid-latitude thinning‚ but the most important process in both is catalytic destruction
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involved carrying out the first three parts of the Cyclohexanol Cycle. The cyclohexanol was first converted to cyclohexene and water by simple distillation (product: 6.5395g‚ 79.75% recovery). The cyclohexene then underwent a bromination reaction by addition of concentrated HBr and a 30% H2O2 solution‚ followed by an extraction of the aqueous phase. This produced trans-1‚2-dibromocyclohexane (product: 12.8886g‚ 67.34% recovery). The trans-1‚2-dibromocyclohexane was reduced by zinc metal to cyclohexene
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for changes in colors of precipitates or solutions. For Dische Test‚ light blue was obtained for RNA and dark violet for DNA. For Murexide Test‚ a yellow layer was obtained with a mixture of red color and eventually became yellow or orange after addition of warm water. For John-Wheeler Test‚ a violet precipitate was obtained and lastly for Phosphate Test‚ a yellow precipitate was obtained. Keywords: Nucleic Acids‚ Dische Test‚ Murexide Test‚ Phosphate Test‚ Wheeler-Johnson Test1. IntroductionThe
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Grignard reaction. As the reaction was to set up to produce a Grignard reagent and then recrystallize it to obtain pure sample. The percentage yield obtained was 55% and its melting point was 161 co which is within the literature value 160-163 co. In addition to that the IR spectroscopy confirmed the molecule structure to be triphenylmethanol. Introduction: The Grignard reagents are alkyl magnesium halides‚ R-Mg-X were first introduced in 1900. These reagents are usually prepared by reacting one atom
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molecules hold them together. The larger the molecule (as it moves down the halogen group) the bigger the intermolecular forces are between electrons because with more rings the distance between each electron is larger. The larger elements such as Bromine and Iodine are larger molecules with a larger amount of intermolecular force between each electron. This increase in intermolecular attraction means that the required heat energy to reach the boiling point increases. Fluorine has a significantly lower
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on a piece of copper metal? What will happen if a drop of solution containing copper ions is placed on a piece of silver metal? Chlorine and bromine are both non-metals (both negative in compounds) and both are used for disinfecting and bleaching. What will happen if chlorine is added to a solution containing bromide ions? What will happen if bromine is added to a solution containing chloride ions? Permanganate ions (MnO4-) react with iron(II) ions (Fe2+) in acid solution. What about the ratio
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sample in test tube+ 1 drop dilute neutral KMnO4‚ if NO DECOLORIZATION warm mixture. Primary Alcohol( carboxylic acid Secondary Alcohol( ketones Tertiary( none Phenols Reaction with bromine/water (Confirms if phenol compound) Reagent: bromine in H2O Observation: Disappearance of orange-brown bromine color‚ then formation of white precipitate Procedure: 3 drops phenol soln on test tube+ Br in H2O drop by drop while shaking‚ observe formation of ppt Oxidation by KMnO4 (Confirms if phenol
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When 4-methylcyclohexanol was combined with the bromine solution‚ the mixture turned into a light yellow color versus 4-methylcyclohexene with the bromine solution being colorless; the initial color for 4-methylcyclohexanol was combined with the bromine solution was a light orange/brown color. The solution being colorless indicated a positive sign of a double bond being present in 4-methylcyclohexene
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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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