Chem 51LC Experiment 6 Lab Report Aldol Reaction Purpose: The purpose of this experiment is to be able to conduct an aldol condensation reaction using an unknown aldehyde and an unknown ketone. H NMR is used to identify the unknown aldehyde and ketone. Melting point is used to identify the aldol condensation reaction. Theory: Condensation reaction is also known as a dehydration reaction. In the mechanism of condensation reaction‚ a bond is formed between two molecules and creates water as a
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material elements in contact. It is usually subdivided into several varieties: * Dry friction resists relative lateral motion of two solid surfaces in contact. Dry friction is also subdivided into static friction between non-moving surfaces‚ and kinetic friction (sometimes called sliding friction or dynamic friction) between moving surfaces. * Lubricated friction or fluid friction resists relative lateral motion of two solid surfaces separated by a layer of gas or liquid. * Fluid friction
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I2 No reaction‚ starch will remain white Reaction; black deposits on the glass tube. Starch turns black Food coloring + NaOCl No reaction; will turn lighter Reaction; the solution that was dark blue turned into light blue Food coloring + CH3COOH No reaction; color will turn lighter No reaction; when both combined‚ the color (dark blue) remained the same Food coloring + NaOCl + CH3COOH No reaction; solution will remain blue Reaction; solution turns light gray Red cabbage + NH3 No reaction; solution
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The experiment did not contain any form of reaction mechanism since no chemical identity had been changed. The lab demonstrates the use of chemical molecular behavior to isolate a particular set of molecules. Caffeine had already existed in the leaf itself but needed to be separated from the other chemicals. Caffeine’s chemical structure is relatively similar to the nucleic acid purine in that they use nitrogen and is bicyclic but lacks an alkene‚ amine and an amide. Caffeine has a solubility of
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Enzymes Reactions to Changes in Substrate and Inhibitors Benjamin J. Mora Coronado University of Texas Rio Grande Valley at Edinburgh Abstract Purpose for the experiments was to test the enzymes in various scenarios and see how changing this would affect the rate of reaction. The enzyme source used in the experiments was Turnip Extract. Concentrations of Turnip extract for activity 1 where o.5ml‚ 1.0ml‚ and 2.0 ml as for the rest of the activities 2 Through 4 stayed at a consistent concentration
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From this lab we can learn to observe physical properties of varying substances as well as to use chemical reactions to observe chemical observe the chemical properties of varying substances. In experiment #1‚ we were able to detect physical properties of the aluminum and copper sulfate simply by looking at the substances. We then combined the two substances to see if they would create a chemical reaction and test the chemical properties. After being combined‚ bubbles and gas were created and the
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Andrea Negrete Abraham Lincoln High School Period 5 1/12/15 1/20/15 Partners: Nasya Aguilar LAB 1: Kinematic Equations and Reaction Time PURPOSE/QUESTION Apply kinematics equations for constant acceleration to find your reaction time. How much is it? How does reaction time change with practice? THEORETICAL The reaction time is the amount of time required to sense astimulus‚ analyze its meaning‚ and respond. Acceleration is the rate of change of velocity. Velocity is speed with direction
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The kinetic theory of gases describes a gas as a large number of small particles (atoms or molecules)‚ all of which are in constant‚ random motion. The rapidly moving particles constantly collide with each other and with the walls of the container. Kinetic theory explains macroscopic properties of gases‚ such as pressure‚ temperature‚ or volume‚ by considering their molecular composition and motion. Essentially‚ the theory posits that pressure is due not to static repulsion between molecules‚ as
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The Diels-Alder Reaction Submitted by: Joe Student Partner: Jill Student Date: February 8‚ 2005 TA: Super TA Reaction +OOOxylene140 oCOOO Data Table Reagents MW Grams used Lit. Mp Anthracene 178.23 g/mol 1.023 g 216-218ºC Maleic anhydride 98.06 g/mol 0.497 g 54-56ºC Products MW Grams obtained Lit. Mp Observed Mp Crude product 276.29 g/mol 1.362 g 261-262ºC 260.2-261.3ºC Recryst. Product 276.29 g/mol 1.283 g 261-262ºC 261.3-261.9ºC Results and Discussion Discuss the
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CHEM 1112 Kinetics of the Persulfate – iodide Clock Reaction The purpose of this experiment is to determine the rate law and the activation energy for the reaction between persulfate ion‚ S2O82-‚ and iodide ion‚ I-: S2O82-(aq) + 2 I-(aq) 2 SO42-(aq) + I2(aq) The rate law can be written as Reaction rate = (1) Where m and n are the orders with respect to S2O82- and I-‚ respectively‚ and k is the rate constant. Determining the rate law involves determining the values
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