Cadet Eric Wiggins Date: 18 September 2014 Course Name: Chem 100 Instructor: Captain Zuniga Section: M3A Identification of a Copper Mineral Intro Minerals are elements or compounds that are created in the Earth by geological processes. The method of isolating metals in a compound mineral is normally conducted through two processes.
Lab Report 5: Acetylsalicylic Acid (Aspirin) Synthesis Name: Divya Mehta Student #: 139006548 Date Conducted: November 19th 2014 Date Submitted: November 26th 2014 Partner’s Name: Kirsten Matthews Lab Section: Wednesday 2:30 L9 IAs Name: Brittany Doerr Procedure: For the procedure, see lab manual (CH110 Lab Manual, Fall 2014) pages 96-98. Wilfrid Laurier University Chemistry Department. Fall 2014. Acetylsalicylic Acid (Aspirin) Synthesis.
Conclusion: In Station 1- reaction 2, Station 3- reaction 1, Station 4-reaction 1, Station 5 reaction 1, Station 6-reaction 1 and 2, and Station 7- 1 and 2 there was chemical reaction because all of those mixed ionic compounds created a precipitate. However some solutions did not become insoluble and produce precipitates such as: Station 1- BaCl2 (aq) + KNO3 (aq) , Station 2- KNO3(aq) + AgNO3(aq) and KNO3(aq) + CaSO4(aq), Station 3- Na2CO3(aq) + KNO3(aq) , Station 4- NaPO4(aq) + KNO3(aq)
Purpose: The main goal of this lab experiment is to synthesize acetylsalicylic acid through using different processes such as crystallization and filtration. Additionally, determining the purity of the synthesize product alongside with a commercial ASA provided in the lab, through using one of the melting point apparatus or conducting a USP test are also the objectives of this experiment. Results Discussion: As discussed in the lab manual, there are certain instructions which apply to proper measurement to provide accurate values throughout the experiments. For example, the transferring of 10 ml of ASA solution to a vial tube by volumetric pipette was necessary to acquire consistent results for our salicylic acid content.
(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).
Two chemical reactions are carried by adding sodium hydroxide to the acidic solution from Part I. During the first reaction is the neutralization of the excess of nitric acid in the mixture by sodium hydroxide. The second reaction takes the place after naturalization is a complete and NaOH is in excess. While the liquid inside the beaker is being stirred, with the stirring rod, 10 ml of 6 M NaOH is poured into the solution from Part I at 1 mL at a time. After each 1 mL the solution is tested for acidity with red litmus paper.
This particular experiment is done as part of my Organic Chemistry course. I was really interseted to do this experiment and I worked out well in this experiment. This experiment was related to the preparation acetaminophen. Acetaminophen is an analgesic compound.
I was given time to get familiar with the environment of the lab by being assigned various lab duties such as cleaning micropipette trays or creating buffer solutions. On June 21st we prepared a sample of the isolated compound (celastrol) and brought is to a chemistry lab at CSU for testing. We decided on gas chromatography mass spectrometry (GCMS) because of its availability at the time. In order to use GCMS, the compound must be a gas. This prompted us to derivatize it.
Based on the results, it is determined that the cyclohexane and ethyl acetate produce a positive deviation and chloroform and acetone create a negative deviation together. The cyclohexane and the ethyl acetate were unable to form any intermolecular bonds with each other, which created the low boiling points and the low azeotrope. The two compounds would rather stay in a pure status than be mixed together. The chloroform and the acetone created hydrogen bonding with each other, which increased the intermolecular forces. This caused the mixture to have high boiling points than the two pure liquids by themselves and create a high azeotrope.
Observing the effects of a catalyst on an enzyme’s rate of reaction Leong, M., Kim, E., Nair, A. Achilly, K., 9/22/2015 Introduction: An enzyme is a protein that acts as a biological catalyst. A catalyst increases the rate of reaction by reducing the activation energy required (Reece 2005). Catalase, an enzyme produced by most living organisms, catalyzes the decomposition of H2O2 in our bodies in order to maintain homeostasis.
React ethanoic acid and 1-butanol under reflux with the presence of trace amount of concentrated sulfuric acid. In this step, the amount of 1-butanol and ethanoic acid used is the same so that a maximum 70% ester yield can be synthesised at the end of the experiment. After the reactants is accommodated in the reactant flask, the trace amount of concentrated sulfuric acid is added drops-by-drops into the reactant flask and the flask is swirled while adding the acid. Additional of concentrated sulfuric acid is to use as a catalyst to increase the rate of reaction by donating a proton to the oxygen atom in carboxylic acid to allow for the mechanism for esterification and thus, the satisfactory yield of ester can be achieved.
INTRODUCTION Acetylene discovered by Edmund chemist in 1836 Who known it as a "new combination of hydrogen".. In 1860 it was made by a new technique by passing over red hot tube, vapours of organic compounds (methanol, ethanol, etc.) by Marcellin Berthelot . He also found that ethyne can be produced or formed by sparking electricity through mixed cyanogens and hydrogen gases . 1.1 USES: Acetylene (C2H2 ) is extremely reactive , having commercial importanc organic compound. it's employed in Fusion welding (process of joining metallic parts).Acetylene is employed as a primarily staple for the synthesis of no of organic chemicals .
CHAPTER 3 EXPERIMENTAL PROCEDURE 3.1 Materials & Reagents Adsorption of Cu (II) was studied using Montmorillonite-K 10, procured from Sigma Aldrich. It is a very soft phyllosilicate group of minerals that typically form in microscopic crystals, forming clay. Its Cation Exchange Capacity, CEC was 119 meq/100 g .The elemental composition of this clay was [Al1.47Fe0.29Mg0.23][Al0.076Si3.29]O10(OH)2 as reported by the supplier.
Synthesis of Hb involved the co-ordinate production of heme & globin. As Hb is composed of 4 subunits i.e. two α & two β globin chain & each of this subunit consist of heme group in the center. Heme- regulates reversible binding of oxygen by Hb.
Since the extraction temperature of acetic acid extraction prior to terephthalic acid production are desired at T = 313.2 K and atmospheric pressure. The temperature has been carried out since the aqueous solution that fed to extractor column is originally coming from the top product of distillation column in the upstream process, also keeping the temperature at 313.2 K to avoid the crystallization of acetic acid during the process. Therefore, the experimental liquid-liquid equilibrium data for the quaternary system involving methyl acetate + p-xylene + water + acetic acid at a desired temperature and pressure were performed, as shown in Table 2. The data given in Table 2 were shown as mass fraction. The compositions of the feed mixtures for
