Ester Synthesis Lab Report

Based on this lab, FTIR spectroscopy affirmed functional groups present in Unknown 30A because it revealed specific transmittance bands for those functional

(1 point) What is the desired catalytic reaction and the primary undesired reactions and explain the enthalpy terms? The chemical equation representing the desired catalytic reaction is the selective hydrogenation of CO2 to produce methanol, which can be written as follows: CO_2 + 3H_2 → CH_3 OH + H_2 O In this equation, carbon dioxide (CO2) and hydrogen gas (H2) react in the presence of a catalyst to produce methanol (CH3OH) and water (H2O).

Factors that affect chemical reactions Intro: this experiment is to show us what factors affect the rate of a chemical reaction. Supplies: The Works Liquid Toilet Bowl Cleaner, TUMS antiacid tablets, a non-serrated knife, a spoon, a stirring rod, four test tubes, flame heater, a small beaker for the boiled water, rubber gloves, and safety goggles. Procedure: we filled a beaker 3/4 of the way full with tap water and brought the water to a boil. We then labeled our test tubes 1,2,3,4.

Introduction The purpose of the experiment was to synthesize and purify isopentyl acetate or banana oil. In order to perform this reaction, the mixture containing excess acetic acid and isopentyl alcohol was heated under reflux. The methods of extraction, drying, and distillation were then used to help purify the isopentyl acetate. After the completion of all these processes, we were able to determine the yield and analyze our isopentyl acetate.

Identifying reaction types and calculating percent yield after multiple chemical reactions of copper metal *Ashlyn Langner and Katherine Rumfield Chemistry 111 Section 524 Introduction A topic of interest in science is the evaluation of the law of conservation of matter through different types of chemical reactions and determining the percent yield resulting from these reactions. This law states that after a chemical reaction, matter should neither be created nor destroyed. This experiment allows for this law to be tested and for the determination of different errors that may occur during chemical reactions similar to this one. The magnitude of these errors can be found through the percent yield calculated by using the original mass of

Abstract During this experiment we will produce Isopentyl Acetate via the fisher mechanisms. The alcohol group is converted into an ester giving off a banana scent. This reaction does not favor the products therefore we must add an excessive amoinut of Acetic Acid to shift the equilibrium to favor the products. Our results showed a successful reaction by comparing our boiling results and infrared results to the textbook data on Isopentyl Acetate. Introduction Isopentyl Acetate is an ester that is commonly referred to as banana oil, this is due to the similarity in odor of bananas.

Pages 96-98 in Chemistry 110 Lab Manual. Wilfrid Laurier University, ON, Canada. Abstract: The purpose of this experiment was to determine the level of purity by using the values for melting point and absorbance and chemically synthesizing aspirin by using phosphoric acid as a catalyst.

The lab, Ester Synthesis, main purpose was to illustrate if chemists can create different smells, from mixtures, in the laboratory. We began by creating a hypothesis from scratch, not knowing anything about what we’re working with, and ended up with a hypothesis which stated the mixtures present for this lab, Acetic acid, Butyric acid for our Carboxylic Group (Putrid smell), and our alcohol listing was isopentanol, butanol, and ethanol. Before we even began the lab, my group and I were already aware that to be a putrid smell, you must have a -ic acid ending to your molecular name or you must have two oxygen atoms present in your structural formula, however, the molecular formula was not needed, so we put that idea to aside. Below you can see

The experiment proved that with the execution of proper techniques, esterification is the a very efficient method regardless of the results obtained in this experiment. The experiment demonstrated the effectiveness of the esterification through the

The purpose of this experiment was to digest plasmid DNA and analyze it by agarose gel electrophoresis. The plasmid pBR322 was introduced to two restriction endonucleases, Hind III and Hinc II. These restriction endonucleases are meant to cleave a part or parts of the sequence of the plasmid DNA; in this case Hind III should cleave one part of the sequence while Hinc II cleaves at two parts. To observe this cleavage two reaction mixtures were created, one with Hind III and the other with Hinc II, along with other reagents that were necessary for the mixture. These mixtures were heated at 37°C for 90 minutes.

CML103 - Term paper Methanol Synthesis Industrial process/chemical synthesized: Today in industries, generally the basis for the manufacture of methanol is synthesis gas (normally called as syn gas). Syn gas is a mixture of carbon-monoxideand hydrogen. By syn gas :- For the production of methanol to be independent of feedstock material, the three steps that can be followed are :- Syn gas preparation, Methanol synthesis and, Methanol purification that contain the reactions given below a.) CO (g) + 2H2 (g) CH3OH (g)

The helicase enzyme initiates the DNA process by unwinding the double helix. If it was missing, the DNA would not be able to replicate as the helix structure would not open. The next step of DNA Replication is the binding of RNA primase in the the initiation point of the 3'-5' parent chain. RNA primase can attract RNA nucleotides which bind to the DNA nucleotides of the 3'-5' strand due to the hydrogen bonds between the bases and also provide a starting point for DNA polymerases to extend from. Without it, the DNA nucleotides would not have something to bind to and to start the DNA synthesis.

ABSTRACT The Diels-Alder reaction has been an area of great research interest with regards to enhancing enantioselectivity in the reaction by use of various catalysts and reaction conditions. INTRODUCTION In organic chemistry, a Diels-Alder reaction refers to a 4, 2 cycloaddition between a diene consisting of alternating double bonds and a substituted alkene (the dienophile) resulting in a substituted cyclohexene system. The reaction is often used to reliably control regioselective and enantioselective aspects in organic synthesis.

Two small additional peaks at δ = 0.8 and δ = 1.6 were found may be due to impurities present. 1H-NMR spectrum of PHA isolated from glucose or molasses media indicated characteristic signals of PHB, namely a doublet at 1.26 ppm, which is attributed to the methyl (CH3) group coupled to one proton while a doublet of quadruplet at 2.51 ppm due to the methylene (CH2) group adjacent to an asymmetric carbon atom bearing a single proton. The third signal at 5.25 ppm, which was attributed to the methine (CH) group. 1H-NMR is a very sensitive method for determining the domain size and miscibility, which is difficult to identify by conventional microscopic or thermal analysis (Kichise et al., 2002).The values of the chemical shifts as well as the assignments of the 1H-NMR signals, which appeared in the spectra are in agreement with results obtained by Kichise et al.

The objective of this experiment was the synthesis of Isopentyl Acetate using an esterification reaction between acetic acid and Isopentyl Alcohol, using a strong acid as a catalyst. The product was washed, and distilled. This approach is called Fisher esterification, whereby esters are produced by refluxing a carboxylic acid and an alcohol in the presence of a concentrated acid catalyst. The ester produced had a banana smell odor. The extraction of the crude product was conducted using sodium bicarbonate followed by distillation.