Rates of Reaction: Iodination of Acetone Introduction: The rate at which a chemical reaction occurs depends on several factors: the nature of the reaction‚ the concentrations of the reactants‚ the temperature‚ and the presence of possible catalysts. In this experiment you will study the kinetics of the reaction between iodine and acetone in acid solution: For this reaction‚ you will determine the order of the reaction with respect to acetone and HCl and find a value for the rate constant‚ k.
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The Kinetics of the acid-catalyzed iodination of propanone Raw Data: Solution A:Propanone 2M Solution B: Iodine 0.005M Solution C: Sulfuric acid 1M Solution D: Distilled water Table 1 Experiment Volume of solution A ±0.05 (cm3) Volume of solution B ±0.05 (cm3) Volume of solution C ±0.05 (cm3) Volume of solution D ±0.05 (cm3) Total Volume ±0.2 (cm3) 1 2 2 2 4 10 2 4 2 2 2 10 3 6 2 2 0 10 4 2 1 2 5 10 5 2 0.5 2 5.5 10 6 2 2 4 2 10 7 2 2 6 0 10 Table 2 Experiment Time for yellow color to disappear
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Lab Report Iodination of Acetone Temperature as a Variable Objective The objective of this lab is to determine the energy of activation of the iodination of acetone. This will be done by performing the reaction at differing temperatures. The same reaction orders we obtained for the previous lab will be incorporated into this experiment. The equation Ea = -8.31 x slope of ln k vs. 1/T(K) will be used to determine the energy of activation required for this this reaction. Hypothesis
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Elecrophilic addition reaction Hydrogenation of double and triple bond Nucleophilic Addition to carbon-carbon double bond Regio and chemoselectivity Addition Reactions • Reaction involving the addition of a molecule or an ion to another molecule • Electrophilic addition – adding species is an electrophile • Nucleophilic addition – adding species is a nucleophile Elecrophilic Addition to carbon-carbon double bond • The characteristic reaction of alkenes is addition—the π bond is broken and two new
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Lab 1: Alkene Addition: Bromination of (E)-stilbene I. Introduction: 1. The purpose of the experiment was to perform an electrophilic addition reaction by using pyridinium tribromide to brominate (E)-stilbene and to identify whether it formed the meso- or racemic product through melting point analysis. 2. This is the mechanism for the bromination of (E)-stilbene. However‚ this is the mechanism for Br2 and in class we us Pyridinium Tribromide instead due to the difficulties associated
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Old Dominion University ORGANIC 214 Alkene Addition Submitted by: Alkene addition: Bromination of (E) Stilbene Introduction: In this lab we used the greener approach‚ which involves the addition of bromine across a double bond. When bromine reacts with E-stilbene (trans-1‚2-diphenylethene)‚ two new chiral carbons are created from the sp2 carbons‚ therefore 3 different dibrominated stereoisomers are possible: meso-(1R‚2S)‚ or the raceminc mixture-(1R‚2R) or (1S‚2S)-dibromo-1‚2-diphenylethane
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the difference between a syn addition and an anti addition? What is the connection between the type of addition (syn vs anti)‚ the type of enantiomer (erythro vs. threo)‚ and the type geometric isomer (cis/trans) used as the alkene reactant? Electrophilic Addition Reactions What is the intermediate in the reaction? What is Markovnikov’s Rule? What are the different types of addition reactions? Hydrogen Halide Addition Reaction What are the electrophile‚ nucleophile‚ and mechanism for this
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RELATIVE RATES OF ELECTROPHILIC AROMATIC SUBSTITUTION Juris Marie G. Garcia Institute of Chemistry‚ University of the Philippines‚ Diliman‚ Quezon City Date Performed: February 27‚ 2015 Date Submitted: March 13‚ 2015 Answers to Questions: 1.) Arrangement of Reactivity: (fastest to slowest) - Phenol‚ Nitrophenol‚ Acetanilide‚ Benzene‚ Chlorobenzene‚ Aniline - A reaction has occurred if there’s a change in color. The nature of the substituent‚ whether electron-donating to the ring or electron-withdrawing
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Objective: To perform an electrophilic aromatic substitution reaction‚ predict the effect on substituent orientation‚ and determine the identity of the product and mechanism for product. Procedure: Schoffstall‚ A.M.‚ Faddis‚ B.A.‚ and Durelinger‚ M.L. Microscale and Miniscale Organic Chemistry Laboratory Experiments‚ 2nd Ed.‚ McGraw-Hill‚ 2004‚ pages 215-218. Experiment 12.2 A Changes: Part A- No methanol recrystallization. Results and Observations
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Lab 6: Electrophilic Aromatic Substitution(1) Nitration of Methyl Benzoate(2) Synthesis of 1‚4-Di-t-butyl-2‚5-dimethoxybenzene byFriedel-Crafts Alkylation of 1‚4-DimethoxybenzenePurpose1)To carry out the nitration of methyl benzoate‚ and then identify the major product formed (position at which nitro-group substitution takes place) by thin-layer chromatography (TLC)‚ the percent yield and the melting point range. 2)To synthesize 1‚4-Di-t-butyl-2‚5-dimethoxybenzene by Friedel-Crafts Alkylation of
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