Electrochemistry Essays

Experiment 5- Electrochemistry: Voltaic cells, Electrolysis and Faraday's law. Name: Christian Miranda Student#: 169019008 Date conducted: Friday March 10th Date submitted: Thursday March 16th Lab section: L16 2:30-5:20 Lab IA: Jaymie Abstract: In this experiment, the objective was to set up a voltaic cell and use it to carry out two electrolysis processes to determine the equivalent weights of zinc and copper. The procedure involved using zinc strips, copper strips, zinc wire, copper wire, a

Electrochemistry is the study of reactions in which charged particles (ions or electrons) appear in two phases of matter, such as the metallic phase (the electrode) or aqueous phase (the electrolyte). (Lower 2004) These reactions involve the transfer of electric charges between the electrodes and the electrolyte. These cells have two electrodes which are named the anode and the cathode. The anode is the electrode where oxidation occurs and the cathode is the electrode where reduction occurs (Electrochemical

The purpose of this experiment is to visually and demonstrate the concepts of electrochemistry between chemical reactions and electricity. Through the oxidation and reductions, concepts I will be able to identify the oxidation-reductions agents with the substances Copper (II) Sulfate and magnesium substances to demonstrate which agent they are as well looking at the movement of electrons once a chemical reaction is occurring, which can be oxidation loss of electrons or reduction a gain of electrons

cm2/s for cyclic voltammetry. Cyclic voltammetry was also used to identify three unknown compounds. Unknown A, B and C was determined to be benzoquinone, thyronine and tyrosine, respectively. Introduction: Electrochemistry is one of the most widespread branches in chemistry. Electrochemistry is the study of reactions that generate electricity through the transfer of electrons. Its applications are seen in everyday life from the use of cell phones, laptops, cars, batteries, and fuel cells.

Chemistry IA Background information: Introduction: Electrolysis it’s a chemical process that when you pass an electric current into a solution or a liquid that contains ions to separate substances back to their original form. The main components that are required for electrolysis to take a place are:  Electrolyte: it’s a substance that when dissolved in water it ionize and then it will contain free moving ions and without these moving ions the process of electrolysis won’t take place.  Direct

P1 Predict the products that form when solution of electrolysed and molten electrolytes are electrolysed Electrolysis Chemical change which is produced by passing an electric current through a conducting solution or molten salt Electrolyte A substance which is able to ionizes ad conduct electricity In order to predict the product of the electrolysis but before we do that we need to know what it is and how does it work. Electrolysis, it is a method to separate bonded elements and compounds by

Sulfuric Acid had the highest conduction of electricity because, it has a certain amount of charged particles allowing it to transfer from the water. it has a high molarity which means it has more ions, allowing the electrons to flow, and conducting more electricity. Only ionic compounds can conduct electricity because the dissociated ions an ionic compound/solution creates when put in an aqueous solution are able to carry a charge through the solution. Molecular compounds do not dissociate their

In this lab, the experiment consisted of multiple reactions performed in a cyclical manner to begin with solid, elemental copper and end with solid, elemental copper. The first and fifth reactions are oxidation-reduction, or redox, reactions, where a transfer of electrons occurs, changing the charge of an element or ion. Redox reactions are often a type of single replacement reactions, in which one elemental species will react with another molecular species, producing another elemental solid out

Polar bears have a thick layer of fat called blubber which is about 11 cm thick. This also helps the bears to survive in the freezing conditions. Not only on land, but the thick layer of fur coat and blubber helps them as they spend a great amount of time swimming in the freezing waters of the Arctic. Blubber is a thick layer of fat that helps prevent sea mammals from getting too cold. Blubber in depth, is an extra digested food stored in the form of adipose tissue, which contains molecules called

Strategy Individual assignment BUSA 7413A- STRATEGY Cost leadership strategy Bonginkosi Dlamini Student no:375148 Table of Contents 1. Introduction …………………………………………………………………………………………………….3 2. Literature Review …………………………………………………………………………………………….3 3. Cost leadership Strategy ……………………………………………………………………………………4 4. Advantages of Cost Leadership Strategy ……………………………………………………….....6 5. Disadvantages of Cost Leadership …………………………………………………………………….6 6. Criticism of the cost Leadership Strategy

Electrolytes are minerals found in liquids that carry either a negative or positive charge. This allows them to conduct electricity and move electrical currents throughout its mass. (Morris) “[Electrolytes allow cells to] generate energy, maintain the stability of their walls, and to function in general.” (Wedro) Heart, muscle, and nerve cells use electrolytes to maintain and carry the electrical current/impulses across their membranes. (Nordqvist) They also regulate muscles and nerves, allow fluids

4) Polysulfone (PSU)[6] The foaming behavior of PSU foams is very similar to that of COC discussed above. PSU is potentially useful for high temperature applications. Cell nucleation density as high as 1015 cells/cm3 can be achieved with PSU foams. Thus cell sizes in the nanocellular range (20-30 nm) can be achieved. Foaming is carried out by the solid state foaming process. CO2 solubility in PSU CO2 solubility in PSU increases with a decreasing foaming temperature. PSU samples were foamed in

Batteries have been around for a very long time. It is thought that the very first type of battery may have been made by the Parthians around 250 B.C. They lived in Baghdad and made a clay jar with vinegar and a copper cylinder inside with a iron rod sticking out. Batteries have definitely changed since then. In the 1800 an Italian physicist Alessandro Volta invented the voltaic pile, which was made of zinc and copper plates with vinegar with leather or pasteboard between each plate. The plates

All electrochemical measurements were performed with an Autolab potentiostat/galvanostat (PGSTAT 101, Eco Chemie, The Netherlands) interfaced with a Nova 1.11 software. A three-electrode system was used in this work consisting of a platinum wire as the auxiliary electrode, an Ag/AgCl/KCl (saturated) as the reference electrode, and a modified carbon paste electrode as the working electrode. A metrohm 827 pH lab (Herisau, Switzerland) supplied with a combination glass-reference electrode was used for

1.1 Why platinum: Many electrochemical experiments were performed on platinum and palladium surface because of some of its properties as follows, 1. Electronic and geometric factors: On theoretical grounds, maximum activity in a hydrogenation process is expected to be shown by metals in group VIII of the periodic table and especially by metals in the palladium and platinum triads [9]. For easy chemical reaction of gases on the metal surface it requires vacant ‘d’ orbital which can accept e- from

Task 1 Explain how a capacitor is constructed? You can imagine a capacitor being a sandwich, two metal plate (electric) that sandwich the dielectric acting as an insulator keeping the two metal plates from touching each other. The dielectric can be made from many different materials like silicon, silicon nitride, aluminium oxide and zirconium oxide to name a few, they all have different values and properties. Which is used depends on the purpose of the capacitor and type of capacitor. The electric

Capacitors are two conducting plates separated by an insulating material. So when a voltage is applied across the plates, the battery works on the plate to separate the negative and positive charges on the capacitor. In lab 21 we will observe this type of charge in snap circuits by using the snap circuit kit from our lab and a stopwatch. In part two of this lab, I observed how the relationship how current, voltage and resistance are used to through a system in regards to Ohm’s Law. Introduction

Ordinary observations were a key to new discoveries which later led to the discoveries in the 1800s. The vacuum pump, which was a tube with electricity passed through with only some air particles, was a large part of finding and studying the relationship between charge and mass. There were metal electrons that were attached on the opposite sides of the tube, and the negative terminal of the battery is the cathode, and the anode is the positive terminal. While Sir William Crookes was experimenting

Ions produced from substances that are broken down in water are called electrolytes. This solution can conduct electricity by the movement of cations and anions. (http://www.science.uwaterloo.ca/~cchieh/cact/c120/electrolyte.html). This electrically conductive solution is crucial to the wellbeing of a person’s body fluids. This helps with life functions along with other things. Electrolytes are responsible for keeping balance between the environments inside and outside of cells in bodies. An imbalance

Introduction An oxidation-reduction reaction involves transferring electrons in a chemical reaction. In a redox reaction, there are oxidizing agents that gain electrons and cause other substances to lose electrons, and reducing agents that lose electrons and cause other substances to gain electrons. Oxidation-reduction reactions are applied in many real-life situations. These reactions are often found in electrochemical batteries, photosynthesis and the burning of fossil fuels.1 Objective For