"Stoichiometry lab" Essays and Research Papers

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    Benzaldehyde

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    ‘oiling out.’ This could be avoided in the future by maintaining the temperature of the solution below the melting point of the crystals. Post Lab Questions 4.Upon analysis of the 1H NMR spectrum of benzoin it was determined that the peak at 4.6PPM is the proton from the OH. The peak at 5.99PPM is the CH proton. II. Introduction The purpose of this lab was to produce benzoin using thiamine as a catalyst in order to get 2 mols of benzaldehyde to react to form a new carbon-carbon bond according

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    chemistry

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    (Name) (Course Name) (Instructors Name) (Date) Summary of chemistry lab report Introduction The two factors which affect the yield of products in a chemical reaction is the amount of starting materials (reactants) and the percent yield of the reaction. Many experimental conditions for example temperature‚ and pressure can be adjusted to increase yield of the desired product‚ in chemical reaction‚ but because chemicals react according to fixed mole ratios( stoichometrically)‚ the only limited

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    Chemistry 30s Exam Grade 11

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    one mark‚ some questions will have a total value of two marks. Note that there are MORE terms provided than you need‚ so read over the list carefully and choose the terms you want to use. The same term may be used more than once in this section. Stoichiometry (4 marks) 1. The calculated amount of product formed during a reaction is called the ____________________ yield. Theoretical 2. For a given chemical reaction‚ the actual yield is always ____________________ than the theoretical yield. Less / smaller

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    Value of Boiling Point: 1- methycyclohexene: 110oC 3- methycyclohexene: 104oC Balanced Chemical Equations Mechanism: Experimental Procedure: (as per lab handout) 1) Add 6 mL of 2-methylcyclohexanol‚ 5 mL of 85% phosphoric acid and a boiling stone to a 25 mL round bottom flask. 2) Set up the flask and also start setting up the distillation

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    David Kennedy CHE 235 Lab 10/30/14 Scale-up Synthesis and Characterization of Butyl 2-Cyano-3-(3‚5-dichloro-phenyl)-2-propenoate‚ TSE Project #131 Introduction: This report describes the steps taken to create the scale-up of targeted trisubstituted ethylene‚ Butyl 2-Cyano-3-(3‚5-dichloro-phenyl)-2-propenoate compound (#131)‚ and also the characterization methods deployed to the results. This report serves as a critical step in the overall objective of the project; the synthesis of the copolymer

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    Lidocaine Synthesis

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    Introduction The purpose of this lab is to synthesize Lidocaine from 2‚6-dimethylaniline‚ using diethyl amine‚ 2-chloroacetyl chloride‚ acetic acid‚ and toluene. The Lidocaine was made by adding 2‚6-dimethylaniline to 2-chloroacetyl chloride in acetic acid. Sodium acetate is added in order to make the compound soluble. The product is dried‚ then treated with diethyl amine and toluene. This is refluxed using a water-cooled reflux condenser. The vapor is condensed by the cold water as the compound

    Free Solvent Acetic acid Ethanol

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    4.08 Percent Yield

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    gures and units. (3  points)    Events  Masses  Empty Dish  24.35 g  Dish with NaHCO3  37.06 g  Dish with NaHCO3 and HCI  40.06 g  Dish after burning  31.52 g    Write the complete balanced equation for the reaction that occurred in this lab. Hint: H2CO3 is not  a final product of the double­replacement reaction; it breaks down (decomposes) immediately  into two products. (3 points)                                                   ___HCl___ + __NaHCO3___ → __H2O___ + __CO2___ +  __NACl___ 

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    Kennedy Date: 11/5/14 Project No: 131 Title: Butyl 2-Cyano-(3‚5 dichloro-phenyl)-2-propenoate Abstract: The targeted trisubstituted ethylene compound Butyl 2-Cyano-(3‚5 dichloro-phenyl)-2-propenoate and its copolymer with styrene was prepared in this lab. The base catalyzed Knoevengael condensation of butyl cyanoacetate and corresponding aldehyde led to the forming Butyl 2-Cyano-(3‚5 dichloro-phenyl)-2-propenoate. The analyses that were used to prove its composition and structure include; IR spectroscopy

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    NMR Studies

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    100 Weight of the of 500ml RB flask before addition of sample: 206.43g Weight of 500ml RB flask after addition of sample solution: 212.79g Weight of sample = 212.79 – 206.43 = 6.36g Theoretical yield is calculated with the aid of a balanced stoichiometry of the reaction. 1. Theoretical yield of methyl salicyl weight of salicylic acid taken: 14g Moles of salicylic acid: 14.g/138 = 0.10moles Mass of methanol = Volume of methanol X Density of methanol. Volume of

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    Synthesis of Ester

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    1.TITLE: To prepare isopentyl acetate (isoamyl acetate) 2. AIM: To make an ester referred to as banana oil from acetic acid and isopentyl alcohol 3.THEORY: This ester is often referred to as banana oil‚ since it has the familiar odor of this fruit O O CH3 H+ CH3 CH3C OH +

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