Electrochemistry

The Investigation of Vanadium’s Redox States Justin Fick Objective The purpose of this experiment was to investigate the chemical reactions involved with oxovanadium ions VO3- and VO2+ to help determine the standard electrode potential for the reaction: VO3− + 4H+ + e− →VO2+ +2H2O. This procedure helped determine the theoretical Eocell. Introduction Vanadium is a transition metal which was explored by Andres Manuel del Rio during 1801 in Mexico. Vanadium has been cited to be present in over sixty

Determination of an Electrochemical Series In electrochemistry, a voltaic cell is a specially prepared system in which an oxidation-reduction reaction occurs spontaneously. This spontaneous reaction produces an easily measured electrical potential which has a positive value. Voltaic cells have a variety of uses and you commonly refer to them as a “battery”. Half-cells are normally produced by placing a piece of metal into a solution containing a cation of the metal (e.g., Cu metal in a solution

Antitussive drugs are one of the most extended formulations category in the world that use for supperessing cough and cold, for treating the symptoms of a cold or influenza and relief of cough(Allen and Popovich 2005)(Allen and Popovich 2005). Dextromethorphan (DXM).scheme 1.(o-3-methoxy- N-methylmorphinan) is a one of the older and popular antitussive drugs that used to treat the cold symptoms that effects centrally at the cough center to raise the threshold for coughing (Goodman 1990, Dale)(Goodman

INTRODUCTION The premise and focus of experiment 9 – Electrochemistry was to demonstrate the potential, in volts, that can be generated by electrochemical cells and how to calculate the theoretical potential of those electrochemical cells using the Nernst equation. Of the electrochemical cells used, there were two different types, voltaic and concentration. Voltaic cells are composed of two half-cells with differing electrodes and solutions that result in a spontaneous flow of electrons from one

Electrochemical and quantum chemical studies of the corrosion and hydrogen evolution reaction of mild steel in acid medium Rabab M. El-Sherif a,*, K. M. Zohdy b Sowmya Ramkumar c a Cairo University, Faculty of Science, Department of chemistry, Giza, 12613, Egypt b Higher Technological Institute, 10th of Ramadan City, Egypt c Department of chemistry, PSGR Krishnammal College for Women, Peelamedu, Coimbatore, India Abstract Electrochemical behavior and hydrogen evolution reaction of mild steel in

SYNTHESIS AND CHEMISTRY OF K2S2O8 ABSTRACT In this experiment, a sample of K2S2O8 was prepared by the electrolysis of an aqueous solution of H2SO4 and K2SO4. The peroxodisulfate anion, S2O82-, was also observed for its ability to serve as a counterion for precipitation by preparing a copper (II) complex by reacting hydrated copper (II) sulfate with ammonium peroxodisulfate in the presence of pyridine. This same ability, coupled with its strong oxidizing ability allowed for stabilization of

25th DAAAM International Symposium on Intelligent Manufacturing and Automation, DAAAM 2014 Electro Chemical Honing (ECH) of External Cylindrical Surfaces of Titanium Alloys P.S. Rao , P.K. Jain, D.K. Dwivedi Department of Mechanical & Industrial Engineering, Indian Institute of Technology Roorkee- 247667, India Abstract Surface roughness has become the most significant functional requirement and it is an index of the product quality. In order to increase the efficiency of hard to machine

In this experiment, stereochemistry was observed. Azo violet is a compound that contains an azo group. This group is comprised of a N=N double bond. Therefore, due to its extensive conjugation within the molecule, it is highly colored and used in the textile industry as a dye frequently. For this experiment, the azo violet will be synthesized and a diazonium coupling reaction will occur. A diazonium coupling is an electrophilic aromatic substitution where the electrophile is the terminal nitrogen

Potential of Microbial Fuel Cells A microbial fuel cell (MFC) is a device that converts chemical energy to electrical energy by the catalytic and metabolic reactions of microorganisms. The microorganisms function as a catalyst in the electron transfer between the electrodes. A MFC is just like any other fuel cell in its function which can undergo a half cell reaction. A typical microbial fuel cell consists of anode and cathode compartments separated by a cation (positively charged ion) permitting

Abstract Conductive polymers have promising applications in the field of tissue engineering as tissue scaffolds. Many tissue types respond favorably to electrical stimulation, because of this conductive polymers can be used for the regeneration of damaged tissue. This review will focus on the synthesis and fabrication of conductive polymers as well as their applications in tissue engineering. Introduction All cells exhibit some form of electrical excitability, from voltage gated ion channels