Electrochemistry

Exploring Electrochemistry Aim: The Aim of this experiment is to investigate electrochemistry including spontaneity, conductivity, galvanic cells and lead-acid cells. Spontaneous reactions will be explored by observing the two reactions below: Zn(s) + Cu2+(aq) →Zn2+(aq) + Cu(s) Zn2+(aq) + Cu(s) → Zn(s) + Cu2+(aq) Conductivity will be explored through measuring the conductivity of water and water with salts. A galvanic cell will be constructed to investigate the two halves of a redox reaction and their purpose in generating voltage. Lastly, a lead-acid battery will be constructed to investigate their uses to light a light bulb. Introduction: Imagine a world without electrochemistry, you may think this isn’t quite such a big deal. Now…

│Cu2+ ( M ) ││ Cu2+ ( M) │ Cu(s) was determined to be 0.566 V while the Kf value was determined to be 3.52 x 1014. The E cell value in the electrochemical cell Pb(s) | Pb 2+ (0.10 M) | | Pb 2+(2.40 x10-4 M) | Pb (s) was determined to be 0.107 while the Ksp value was determined 5.54 x 10 -11 According to the first law of thermodynamics, during a chemical reaction, energy is produced, this energy can be converted into heat, work, or a mixture of heat and work. By…

How does a variation in the concentration of metal ions of the cathode in a Zinc-Copper electrochemical cell affect the electrical potential? Introduction: In a highly technological and quickly developing society, it is imperative to innovation that basic components are understood and explored to further expansion and advancement. In order to understand how everyday necessities such as cars, computers, and cell phones are constantly powered, it must first be understood what is in a battery as…

Then add in another 3.751 ± 0.001g of Cu(NO3)2 crystals in order to increase the concentration from 0.1M to 0.2M. Once again record the voltage produced. Repeat this procedure until a concentration of 0.5M copper (II) nitrate solution has been achieved. After this remove the contents of the Cu(NO3)2 beaker, and recreate a 0.1M solution. Repeat steps 8-11 for another 4 trails, continually increasing the concentration by 0.1M and recording the results. After all necessary data was…

Silver, lead, arsenic, bismuth, antimony, selenium, and nickel are common impurities existing in copper anodes. Some impurities dissolved from the anodes can precipitate, if their concentrations in the electrolytic solution are above saturation levels. Some of these precipitates can settle down but some are floating slimes and can be a source of cathode contamination by their incorporation into the cathode 16. These floating slimes are amorphous and typically have compositions of Sb-As-O and…

Fig. 1.1 Schematic principle of Electro Chemical Machining (ECM) 1.2 Principle of ECM Electrochemical machining removes material from the work piece by electrochemical process. The working principle is anodic dissolution in which the work piece as anode and the tool as cathode. Both electrodes are immersed in the electrolyte and electrical applied to these electrodes. The electric conduction is achieved through the movements of ions between the anode and cathode through the electrolyte. The…

Q1. Describe the construction and operation of a Ni-Cad battery. Compare and contrast the Ni-Cad battery with a Lead-Acid battery. a. Construction: figure 1. Ni-cad battery construction Ni-Cad battery refers to Nickel-cadmium battery which is widely used in industrial world. Basically, the Ni-Cad battery consists of positive and negative plates, separators, electrolyte, cell vent, and cell container. The positive plate in Ni-Cad battery is Nickel Hydroxide Ni(OH)2. However, the negative…

In the stories, “Energy Story,” “Short Circuit,” and “Conducting Solutions.” They use examples and real life experiments to tell the reader about energy and different ways it can be conducted. To begin, In the story “Energy Story.” They first begin by catching the reader's attention by saying how energy is used everywhere in our lives and most of the appliances we use today would be useless without energy. They then begin to explain atoms and how they have to do with electricity. “Electrons…

The stories Conducting Solutions, Energy Story, and the video Hands-On Science with Squishy Circuits have all helped me learn a lot more about electricity. The purpose of these sources were to help the reader to understand and inform the reader about how electricity is made. It also showed how easy it is to make electricity. These three sources have many differences and similarities but they all serve the same purpose. In the video Hands-On Science with Squishy Circuits it talks about how easy…

In this experiment, I tested the effect of saltwater on the formation of rust on an iron nail. To test this, The first step was to fill each labeled cup with the correct ratio of salt to water. The ratios varied between groups which created different concentrations of salt for the different groups thereby constructing different levels of my independent variable. The next step was to record the initial mass of each nail and then place them in the cups. Then, the nails were left to soak in their…