We resulted that lead, silver, and copper are the strongest oxidizing agents, and that magnesium and zinc are the weak oxidizing agents. The strong oxidizing agent oxidized the weak oxidizing agent and in turn the strong oxidizing agent got reduced while oxidizing the weak agent. When a reaction occurred, the solid metal reduced the ion, and in turn made it the more reactive metal. In part two we used a solvent extraction technique to derive an activity series for the halogens. With the use of this technique we placed chlorine, bromine, and iodine into solutions containing chloride, bromide, and iodide.
- signs of chemical change = changes the shape and color, creates a gas, distributes heat, Etc. - Chemical Change= Substance is formed into a completely new substance 2. Hypothesis: If the copper is being tested in these metals ( Copper, Magnesium and cupric chloride) then it would be the least reactive out of magnesium and zinc because it is the lowest among the three on the activity series. 3. Experimental Design: - Independent Variable: different types of metals: magnesium, zinc and Copper - Dependent Variable: amount of reactants observed for each metal - Control : The Air -Constants: The amount of chemical solutions, the time the metals were in the chemical solutions and size of each metal during the experiment 4.
Lab 5: Precipitate Patterns October 31st, 2013 Partners: Muhammad Saeed, Kristian Palmer and Kyle Poirier By: Rauman Tuan-Kichil For: Mr. Fontaine Investigation: Wastewater from metal manufacturing processes often contains toxic cations. These ions must be removed before the water can be released into the environment. Many of these ions can be removed using precipitation reactions. For example, recycled car batteries contain toxic lead cations, Pb 2+. These can be removed by adding a solution of potassium iodide, KI.
The half reactions for this system are: Oxidation of 〖Fe〗^(2+): 〖Fe〗^(2+)→ 〖Fe〗^(3+)+1e^- Reduction of 〖MnO〗_4^-: 〖MnO〗_4^-+8H_3 O^++5e^-→ 〖Mn〗^(2+)+12H_2 O Which produces the following overall equation: 〖MnO〗_4^-+8H_3 O^++5〖Fe〗^(2+)→5〖Fe〗^(3+)+〖Mn〗^(2+)+12H_2 O Equilibrium is initially obtained at a very slow rate, therefore the titration is carried out in the presence of excess sulphuric acid (H_2 〖SO〗_4) at a high temperature; in order to drastically increase the rate at which equilibrium is attained. Potassium permanganate acts as its own satisfactory indicator since the reagent 〖MnO〗_4^- anion appears to be an intense purple colour while the product 〖Mn〗^(2+) cation has a colourless appearance. However, the end point must be read quickly as the permanganate end point gradually fades due to the 〖MnO〗_4^- reacting with the 〖Mn〗^(2+) that was formed during the titration. When performing the titration, one must be cautious as side reactions can occur and these side reactions must be prevented using appropriate chemical measures. If an insufficient amount of acid was
1a) Explain the classification of the selected energy resources shown. This resource shows the environmental impacts, social acceptability and economic costs of a select few energy sources. They are classified in this way for a number of reasons. Nuclear power is shown to have high economic costs, this is because it is very expensive to build and decommission nuclear power stations, it also an expensive process to mine, process and enrich uranium and plutonium required as nuclear fuel. Nuclear waste must also be stored for a very long period adding to the cost.
Zirconium Zirconium (40Zr91) is the 40th element in the periodic table of elements. Its electronic configuration is 2, 8, 18, 10, 2. It is a lustrous(glossy, shiny) gray transitional metal that resembles titanium. It is both ductile (able to be deformed plastically without breaking) and malleable (differs from ductility as far as it can be hammered/rolled into a thin sheet). It cannot be found as a native metal in nature, The Social benefits and limitations of Zirconium Zirconium is used primarily as an alloying agent because it is highly resistant to corrosion from alkali, salt water, acids and many other possible sources of corrosion.
Carbon dioxide is an significant contributor to the enhanced greenhouse effect. It can result in trapping more of the heat that Earth is radiating into space and cause detrimental climate changes and rising sea levels. The main concern regarding the combustion of organic compounds is the result of incomplete combustion. Incomplete combustion occurs when there is not enough oxygen to completely burn the fuel to carbon dioxide and water, causing pollution and fuel inefficiency. For example: Pentane reacts with little oxygen to form
Some natural waters contain iron ions that affect the taste of the water and cause rust stains. Aeration converts any iron (II) ions into iron (III) ions. A basic solution (contains hydroxide ions) is added
Cory Kinser 101007 Tyson Sims Compare and Contrast Essay Oxy-acetylene Vs. Gas Tungsten Arc Welding Oxy-acetylene Welding and gas tungsten arc welding are two of the most important processes in the welding industry. Gas tungsten arc welding and oxy-acetylene welding are the only welding processes that have any resemblance to each other. Both gas tungsten arc welding and oxy-acetylene welding are unique in many different ways. It take years of practice to master either one of the processes. The oxy acetylene process and the gas tungsten arc welding process both play a big part in the welding world.
Suzuki concludes that the war metaphor is appropriate because developed countries as a collective entity are the main cause of the devastating environmental crises around the world. For example, Industrialized nations are using a lot of the earth’s natural resources for personal gain and profits and because of this blatant exploitation of resources. Many citizens in third world countries are living sub standard lives and are unable to get sufficient resources to live. David Suzuki states that even though industrialized nations only account for about 20 percent of the population they are surprisingly consuming eighty per cent of the planets resource and also generate most of its industrial toxins and wastes. This fact proves that the industrialized