Reaction: Kinetics Study of Hydrolysis Reaction of Methyl Formate Using An Acidic Ion Exchanger. Objectives : 1. To study the effect of high activation energy upon k values of methyl formate. 2. To report the rate law expression for decomposition of methyl formate. 3. To determine the integrated rate law for methyl formate. 4. To demonstrate how rate constants vary with temperature and activation energy. Chemicals and Apparatus : 1. Methyl formate (m.w. = 60.05 g/mol‚ d= 0.97 g/mol) 2. Methanol
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Upon addition of bromine‚ the brown color of bromine quickly disappears as the bromine adds to the double bond in the products. Addition of bromine to the fractional distillate caused the bromine to discolor. The addition of bromine to 2-methyl-cyclohexanol remains brown because there is an absence of double bound (saturation). Addition of potassium permanganate caused the solution to turn slightly brown but appeared immiscible as result of the unsaturation product. When analyzing the IR
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EXPERIMENT NO. 5 COMMON ION EFFECT Lopez‚ Pauline G. HIJ-2‚ Group No. 5‚ Ms. Jervee M. Punzalan Ramales‚ Ayane Mark Q. September 15‚ 2014 I. ABSTRACT The common ion effect involves how the solubility of a salt changes when some ion that is common to both added substance and the salt in question is introduced. The presence of a common ion hinders the ionization of a weak acid or a weak base hence this is known as the common ion effect. Simply put‚ the effect
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Pseudomonas taiwanensis – Enrichment‚ Isolation and Identification Microbiology 521 2/10/12 Purpose: The purpose of this experiment was to enrich Pseudomonas bacteria‚ isolating a species of Pseudomonas and identifying it using phenotypic properties and DNA sequencing as an existent or completely new and undiscovered species of Pseudomonas. Overview: Genus Pseudomonas is a chemoheterotrophic bacteria found in soil and water. They are Gram negative‚ motile‚ paired rods that are also oxidase-positive
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used. The reaction between alcohols and carboxylic acids will produce esters. Apparatus: Stopper‚ dropper‚ test tube‚ stopwatch‚ water bath‚ measuring cylinder (10ml) Chemical Reagents: Ethanol‚ n-Butanol‚ 2-Butanol‚ Alcohol X‚ Lucas reagent‚ 2-methyl-2-propanol‚ Concentrated H₂SO₄‚ 0.04 M Na₂Cr₂O₇‚ Glacial acetic acid Procedure (a) Lucas
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= 0.01 %D- = x100% %D- = x100% %DH+ = x100% %DH+ = x100% = 0.01% = 99.01% = 100.00% = 99.01% 3. DH = sulfonylureas At pH = 5 At pH =6.5 Metsulfuron-methyl (pK = 3.3) Metsulfuron-methyl (pK = 3.3) = 105 – 3.3 = 106.5 – 3.3 = 50.1187 = 1584.8932 %DH = x 100% %DH = x 100% = 1.96% = 0.063% Chlorsulfuron (pK = 3.7) Chlorsulfuron (pK = 3.7) = 105 – 3.7 = 106.5 – 3.7 = 19.9526
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Separation of a Carboxylic Acid from a Neutral Compound by Extraction Reference: Smith‚ Chapter 2 (Acids and Bases) Introduction Carboxylic acids and phenols are two families of organic compounds that contain carbon‚ hydrogen and oxygen‚ and also react with water to yield an excess of hydronium ions over hydroxide ions. Pure water has a pH of 7‚ which means it has a hydronium ion concentration‚ [H3O+] of 10-7 M (M = molarity‚ moles/Liter). The hydronium ions in pure water come from the self-ionization
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suitability of phenolphthalein and methyl red as acid base indicators. We found that the equivalence point of the titration of hydrochloric acid with sodium hydroxide was not within the ph range of phenolphthalein’s color range. The titration of acetic acid with sodium hydroxide resulted in an equivalence point out of the range of methyl red. And the titration of ammonia with hydrochloric acid had an equivalence point that was also out of the range of phenolphthalein.. The methyl red indicator and the phenolphthalein
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This solution is also known as an insecticide‚ which in simpler terms is a chemical (Emamectin Benzoate). This would be injected into the base of any ash tree and is used to kill off the EBA or any other unwanted pests. Now many wonder if it will hurt the tree‚ and the answer is no. This chemical is not only killing the EBA‚ but also helping the ash
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The methyl red test will indicate if the organism produces acidic or neutral end products by the fermentation of carbohydrates. After inoculation‚ methyl red is directly added to the broth‚ a positive result is a red coloring of the broth while a negative result shows no color change. After inoculation‚ I added methyl red to the tube to identify what type of end-products were produced. This addition of methyl red didn’t change the color of the broth which
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