Electrochemistry

Calculating Potential of Cells with Unequal Concentrations: Using the Nernst equation, the data was plugged into its respective variables. The potential of the standard cell potential is 1.1 V. The number of electrons transferred in the reaction is 2. Using the data from the second trial, the quotient of the concentration of solutions equaled to 0.1. E=1.1-(0.059/2)×Log0.1=1.1295↑=1.13 V When several batteries were built using a Cu/Cu2+ half-cell with a variety of metals, the half-cell containing

Many scientist and environmentalist around the world have been trying to discover ways to help stop and reduce pollution. Some have turned towards renewable energy in order to try and cut back on pollution and waste. Some industries such as the pharmaceutical industry cannot use renewable energy such as solar or nuclear energy. Pharmaceutical companies have to do experiments in laboratories to try and create new drugs. This process takes a lot of time and energy to do and if the drug that the pharmaceutical

field between individual digits of electrodes. Using these simulations, it was observed that gold nanoparticles bound closely to IDEs can lower the electric field magnitude between the digits of the electrode. The simulations are also shown to be a useful design tool in optimizing sensor function. Various different conditions, such as electrode dimensions and background ion concentrations, are shown to have a significant impact on the simulations.]. From being a simple interface, the properties of

Titanium dioxide has mesoporous structure that act like a pathway for the electrons crossing through the cell. After dye absorbs light, it will release electrons and these electrons need to travel from cathode to anode, titanium dioxide is a conductor that helps electrons move. If we don’t use any metal, these electrons can’t travel through thus they can’t produce current. the higher the wavelength, the lower the frequency thus the lower the energy the dye will absorb to release an electron. We

Fig. 10 compares the switching instances between – (i) CSFSVPWM and VSFSVPWM, and (ii) CSFDPWM2 and VSFDPWM2. It also shows the shape of the switching frequency variation for each sector. The following can be noted: - The VSFSVPWM reduces 3 switching instances per cycle compared to CSFSVPWM, a 13.6 % reduction. - The VSFDPWM reduces 2 switching instance per cycle compared to CSFDPWM, a 12.5% reduction. Hence, the proposed variable switching frequency PWM reduces the switching instances within a

Recently, water and food pollution are the important global concern in environmental protection and human health due to their numerous harmful activities. There are many pollutants producing by human day-by-day including nitrate, fluoride, pesticides, mercury, lead, arsenic, and nitrite resulting from oil spills, burning of the fossil fuels, dumping waste and sewage of factories, and etc. Among them, nitrite was widely used in the food industry, pharmaceutical and agriculture as an additive in foods

Answer the following questions along with your research to formulate your conclusions 1. For Part A list the solutions in which there was evidence of corrosion. Separately list those solutions in which there was no evidence of corrosion (1mark) Evidence of corrosion - NaNO3 - Distilled Water No evidence of corrosion - HCl - KOH - Na2 Cr2 O7 - Boiled water with Vaseline 2. What substances must be present for rusting to occur? Is there any evidence from this experiment that supports this?(2 marks)

The antimicrobial applications of metal NPs is currently interview of the hour , is due to the growing microbial resistances to multiple antimicrobial agents and the development of resistant strains. Their high surface area to volume ratio compared to bulk material, provides a large active surface with large number of the low coordinate atoms, available to interact with microbial membranes or to release metal ions. Among the others metal NPs, the recent interest in the CuNPs is propelled by both

Affinity of Cu+ for the Copper-Binding Domain of the Amyloid-β Peptide of Alzheimer's Disease Summary Alzheimer’s disease (AD) is part of a group of diseases called dementia and it is the most typical type of dementia, making up about 60-80% of total dementia types. This disease is becoming more and more prevalent as people’s lifespan increases, because of the ever-advancing medical field. Additionally, the total number of Alzheimer’s cases is expected to double over the next 20 years. Most

Michael Gugliotta 12/3/14 Chemistry Period 8 Electrolysis Lab During this experiment, we saw electrolysis in action. Electrolysis occurs once an electrical wave hits an object. Electrolysis only occurs when it is in a salt-based or an ionic compound. It also detaches