The Effect of Temperature on Voltage in a Galvanic Cell By: Kaitlyn Barr Aim: To investigate the extent to which temperature affects the voltage in a Daniell cell. Variables Independent Variable: The temperature (˚C) of the cell (0˚C, 3˚C, 15˚C, 22˚C and 34˚C) (measured with a temperature probe) Dependent Variable: The voltage (V) that the cell produces (measured with a voltmeter) Control Variables: Amount of metal used in cell (1.0g copper and 1.0g zinc). The amount of each of the […]
Synthesis of Ruthenium(II) and Molybdenum(V) using dimethylsulfoxide (DMSO) as a ligand By: Cooper Semple and Nathaniel Hurd Abstract– In this experiment two compounds tetrakis(dimethylsulfoxide)dichlororuthenium(II) and dichlorodioxobis(dimethylsulfoxide)molybdenum(VI) were synthesized using dimethylsulfoxide as the ligands. This was performed by adding DMSO to RuCl3(H2O)3 as well as to MoO3 then by heating and finally vacuum filtration to collect our final products. We concluded that both compounds were made correctly with few impurities as well as how each metal was bonded to DMSO. This […]
Synthesis of Malachite and Verdigris By: Alyssa Brunal OBJECTIVE To perform synthetic reactions as provided in a primary journal article, provide a complete reference citation using EndNote, document observations of chemical reactions, determine if data is quantitative or qualitative, and separate a precipitate using gravity and vacuum filtration. EXPERIMENTAL METHOD Materials All materials required for this experiment were provided by the Virginia Tech Department of Chemistry. Synthesis MALACHITE Part A: Creation of Malachite Mixture The Malachite mixture was made by […]
Synthesis of Aspirin and Flavoring Esters By: Leah Warkel and Matt Glattfelder Introduction An ester is an organic compound that is formed by combining a carboxylic acid and an alcohol.1 It has the general formula R-CO-OR’.2 If an alcohol undergoes a condensation reaction, an ester is formed. This is reversible however, so if an ester undergoes hydrolysis, an alcohol is formed.1 A condensation reaction is when a molecule combines with another molecule to produce a larger molecule and a smaller […]
Acetylsalicylic Acid Synthesis By: Elizabeth Renteria Theory. This experiment was carried out to see how the hydroxyl group on the benzene ring in salicylic acid reacts with acetic anhydride to form an ester, and to make aspirin. Synthesis of Acetylsalicylic Acid occurs by protonation of carbonyl (C=O) group, and a nucleophilic attack of OH on the acetic anhydride. The ferric chloride test and melting point were used to test the purity of the results. A hypothesized recovery rater of above […]
Abstract Polyaniline was successfully synthesised using cyclic voltammetry. The redox properties of emeraldine base, a polyaniline derivative, were explored, and it was proved using UV-Vis spectroscopy that emeraldine salt exists in a coiled form when using DMF as a solvent, but in the extended chain form in m– cresol. Introduction Inherently conducting polymers (ICPs) are electrically conducting polymers that can by synthesised by the chemical (or electrochemical) oxidation of suitable monomeric materials. One of the most studied ICPs is polyaniline […]
