Acid Rain Research Paper What is acid rain? Rain is one of the most dire and essential needs for a thriving ecosystem‚ and to sustain human‚ animal‚ and plant life. The water provided by the water cycle‚ the event causing rain‚ is required to keep all life on Earth alive. Rain‚ although naturally acidic‚ seems to have been increasing at a rapid rate due to many reasons. Some of these many reasons include‚ pollution. Pollution from homes‚ factories‚ power stations‚ cars‚ and many more
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& Worksheet: Acids‚ Bases & Salt Name : __________________________________________________ ( ) Class : Secondary 3 Maju/Cemerlang Date : ______ August 2012 Acids Definition: Substances that release hydrogen ions (H+) when dissolved in water. Strong Acids | Weak Acids | Chemical Name | Chemical Formula | Organic acids such as citric acid‚ ethanoic acid. | Hydrochloric acid | HCl | | Sulphuric acid | H2SO4 | | Nitric acid | HNO3 | |
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removed from the solution by reacting with sodium bicarbonate. The aqueous layer reacts with hydrochloric acid‚ the unknown component can then be isolated by evaporating the solvent from the dichloromethane solution. Observations and Data: Aspirin reacted with Sodium Bicarbonate to form salt‚ sodium acetylsalicylate. The reaction caused fizzing and gas. When hydrochloric acid was added to sodium acetylsalicylate the solution bubbled‚ sizzled‚ and gave off heat. All precipitates were
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2.0mL Solvent Sodium Iodide NaI 149.8943 MP=661‚ BP=1300 3.667 0.117g Catalyst Bleach NaOCl 74.4422 MP=NA‚ BP=40dec 1.209 1.1mL Oxidizing Agent Sodium Thiosulfate Na2O3S2 158.0977 NA 1.667 1.0mL Extraction Hydrochloric Acid HCl 36.4609 MP=-114.2‚ BP=-85.1 0.909 0.6mL Acid Agent Limiting Reagent and Theoretical Yield: (0.1g Vanillin/152g/mol) = 6.58 x 10^-4 mol Vanillin  Limiting Reagent (0.117g NaI/150g/mol) = 7.8 x 10^-4 mol NaI Theoretical Yield: (6.58 x 10^-4 mol Vanillin/1)(279g/mol)
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almost everyone associates with acids and bases is the litmus paper‚ which has the ability to change the color in response to an acid or a base. Phenolphthalein is another common indicator use by beginners in chemistry because its color change is very obvious‚ making it easy to use. There are many other indicators that change color at different pH levels‚ and so are useful for different purposes. Many pigments found in nature can be quite effectively used as acid-base indicators. The purple eggplant
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of the reaction and is dependent on the formation of the carbocation. In this experiment‚ the carbocation intermediate forms as the alcoholic hydroxyl group is protonated with acid‚ and dihydrogen oxide leaves. After this unimolecular dissociation step‚ a proton from one of the adjacent carbons is captured to reform the acid catalyst‚ and the elimination reaction is complete with the formation of the double bond. Water is distilled out of the reaction to promote a high yield of 4-methylcylohexene
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Title Abstract During this experiment the change in pH of Citric acids is measured from start to equilibrium in mL. This experiment was tested by titration it had two separate trials. Through observations it was shown that the more concentrated acids needed more drops of NaOH to reach its equilibrium then the less concentrated acids. Introduction Sodium Hydroxide (NaOH) is a strong base and when it is titrated with a strong acid the equivalence point will be expected to be a pH of 7 (wyzant.com
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Experiment 5- Standardization of NaOH and determination of Molarity of an unknown Acid Objectives 1. Preparation and standardization of a 0.1M NaOH solution 2. To learn the technique of titration 3. Determination of the concentration of an unknown diprotic acid. Introduction Titration can be traced to the origins of volumetric analysis‚ which began in the late eighteenth century. Study of analytical chemistry began in France and the first burette was made by Francois Antoine Henri
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ACID RAIN Acidified particulate matter in the atmosphere that is deposited by precipitation on to a surface‚ often eroding the surface away. This precipitation generally has a pH less than 5and some times much lower depending upon the concentration of acidic components. Acidic deposition principally by the pollutant gases such as sulphur dioxide (so2) and the nitrogen oxides cause acidic deposition. The burning of fossil fuels‚ such as coal‚ forms Sulphur dioxide. that contain high quantities of
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to produce ethyl ethanoate as the risk is too high. Alternative 2 CH3COCl + C2H5OH CH3COOC2H5 + HCl The atom economy of this experiment is 70.68%‚ which is a good atom economy however the experiment I conducted using a carboxylic acid and alcohol produced an atom economy of 83%. That means this experiment is less efficient than the one I carried out so it would not be beneficial for the company to use this method (alternative 2) to produce the ethyl ethanoate as there is a more
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