Sulfuric acid

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    The dehydration of Cyclohexanol requires going through an acid-catalyzed elimination of water for the synthesis of cyclohexane from cyclohexanol. To get cyclohexane from cyclohexanol you must remove the cycloalkane with fractional distillation, drying with anhydrous sodium sulfate, and analyzed by GC data and the bromine test. The reaction we are trying to accomplish going from cyclohexanol to cyclohexene is a secondary alcohol going through an E1 reaction. This is the unimolecular…

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    add 12 mL of concentrated sulfuric acid, H2SO4 with caution, and shake the tube gently to moisten the sample with the appropriate acid. Connect the Exhaust system with the tubes which has been placed on the rack and ensure the aspirator system to start functioning. The rack and Exhaust system are locked to heaters block digester DS6 which has been preheated to 420 ̊C to begin the process of acid digestion. After about 5 minutes, turn off the aspirator system until acid fumes can be formed only in…

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    3-(benzylideneamino)-2-phenylquinazolin-4-(3H)-one 5 (a-j) A mixture of 3-amino-2-phenyl-3H-quinazoline-4-one as well as its substituted analogs (3-4) and the appropriate aromatic aldehydes dissolved in ethanol (50 mL) containing few drops of glacial acetic acid were heated under reflux for 7-8 hr. The solution was cooled and the precipitated solid was obtain, filtered, and washed with water, dried in vacuum and recrystallized from ethanol 2, 3.…

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    Exp D. Post Lab Report

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    concentrated sulfuric acid in the first step? The purpose of using concentrated sulfuric acid is to activate the reaction of salicylic acid and acetic anhydride and produce the acetylsalicylic acid, which is aspirin. The sulfuric acid is used to protonate oxygen atom of a carbonyl group of salicylic acid. 2. What would happen if the sulfuric acid were left out? Removal of catalytic acid from the reaction would slow down or not proceed at all because the phenol group on salicylic acid is not…

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    By combining the unknown compound with an acid, a base, and two salts, its reactivity was determined. Reacting the unknown compound with sulfuric acid (H2SO4) produced no visible reaction (precipitate), although the pH of the resulting solution was very acidic. Combining the unknown compound with sodium hydroxide (NaOH), a strong base, also had…

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    Acid rain results in many ecological effects, with the most severe of these affects being its impact on lakes, streams, and aquatic environments in general. It negatively affects marine life, because acid rain makes waters acidic, causing the absorption of Aluminum; which is a combination that threatens some aquatic animals. As the acidity of water increases, the number of fish and marine animals in general decline. Although, there are some species that are able to survive in acidic water,…

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    amount of oxalic acid in the sample solution. The analyte solution containing oxalic acid was added with sulfuric acid and heated prior to the titration with permanganate. The persistent pink color signaled the end of the titration. The amount of the oxalic acid in the solution was found to be 8.941%. The redox titration was precise in the quantification of oxalic acid with a standard deviation of 1.327%. Introduction One of the natural organic compounds found in plants is the oxalic acid. It…

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    to as lime water or slaked lime is formed by reacting hydrated lime (calcium oxide, CaO) with water (H2O)[1] CaO (s) + H2O (l) ⇌ Ca(OH)2 (aq) (ΔHr = −63.7 kJ/mol of CaO) Calcium hydroxide is an economically favorable alkaline reagent to neutralize acid as it yields 2 moles of (OH)2 for every 1 mole of Ca(OH)2 (which is slightly soluble in water) when compared to sodium hydroxide [1] and it may separate from the solution ‘constant agitation must be done to prevent the separation since calcium…

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    Acid Rain Effects

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    Acid rain is a rain that is more acidic (has more hydrogen ions) compared to normal rain and it has serious negative effects to nature and people. It is a mixture of wet and dry depositon that contain high amounts of nitric and sulfuric acids (see Figure 1). These gases come from electric generation, factories, forest fires, burning fossil fuels and acid rain forms when these gases react with water, oxygen and air. Wet deposition happens when acid chemicals fall to the ground in a rain or snow…

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    solution, because it is the source of the Grignard reagent. Because the halide cannot be eliminated, the next best option is to minimize the amount of halide in the reaction. In this experiment, a small concentration of the halide is reacted with a high concentration of magnesium to ensure maximum contact between halides and magnesium. To do this, magnesium will be placed in the round bottom flask and then halides are slowly added. Another potential source of error is that Grignard reagents must…

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