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Recommended: Ph corrosion rate
Hypothesis: If the presence of salt dissolved in water is increased, then the rate of corrosion will increase. Aim: To compare the rates of corrosion of different nails by adding them to different samples of water, both salt and fresh, and then analysing the rate in which the nails corrode . Metals corrode via a process called redox reactions. Corrosion causes substantial costs to the economy as water pipes and buildings corrode very easily. On average $50 billion is spent annually in an attempt to prevent metals from corrosion. Corrosion is widely known for its orange-brown flakes known as rust. Corrosion can happen via two ways, either dry corrosion, which is a direct reaction with oxygen to form metal oxide. The other form of corrosion is, wet corrosion. Wet corrosion is known for the presence of moisture which accelerates the process in which metals rust. It can occur in moist air or when in …show more content…
Alloying: When a substance is formed when other materials are mixed with a metal. Cathodic protection: use of a low voltage power supply to ensure that a reduction reaction occurs at a metal surface to prevent corrosion. This investigation will focus on the experiment conducted to identify the effects and rate in which different nails corrode under different wet corrosion methods; via simple wet corrosion by placing the nails in fresh water, and via placing nails in water with salt impurities. By doing this it will hopefully be concluded that metals do corrode faster when in the presence of impurities in water. [1] 1. If necessary, clean the nails with fine sandpaper. Weigh each nail and record initial results. 2. Label each test- tube with either tap water or salt water, and place a nail in each one. 3. Add tap water to the first 4 test tubes labelled tap water, ensure to cover the nails with 50ml of
for one minute only, use 20cm3 of water and make sure the tip of the
Immerse the test tube under the cold water and stop in with a rubber stopper (while under water).
The materials I need for this experiment are table salt, Epsom salt, kosher salt, sea salt, fifteen clear cups, ice cubes, and a stop watch.
Blister copper then goes through the fire refining and then cast into copper anodes and placed in an electrolytic cell. Each copper anode is placed in a tank made of concrete. A sheet of copper is placed on the opposite end of the concrete tank to become the cathode or the negative terminal. An acidic copper sulfate solution is then poured into the concrete tanks; this forms the e...
Place a small piece of magnesium ribbon in a test tube and add about 2mL of dilute HCL.
In this experiment it includes testing water, using Silver Nitrate, waying out salt, and using lamps. When Starting before pouring your water test the water with silver nitrate to make sure it has not been contaminated.
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
The art of polishing nails has been around for centuries for both men and women. Nail polish or nail stain, as it was known for many years ago, started out being natural in formula. However, as the years have progressed, nail polish formulas have become more intricate including chemicals. As the years have passed, the color and purpose of polishing nails has expanded to not only nobles or those of high rank/station, but also everyday people. There are many different ingredients in today’s nail polishes. It is important to know which ingredient correlates with the four primary qualities of nail polish, specifically the ingredient that is responsible for the drying-time. Red has become one of the most popular colors to paint nails. Essie,
Put a label on each test tube. With a pencil, number each test tube from one to twelve.
This would not only allow me to compare the nails in the box alone, but compare them to other nails from other stores that were galvanized the same and galvanized differently. I would be interested in knowing more about the purpose of the zinc on the nails as well as why there is a standard of how much zinc should be on a nail.
5.) One at a time, place your test tubes in the water bath and heat the first test tube to 25 , the second to 50 , the third to 75, and the last to 100 degrees c. Remeber to stir with your stirring rod every so often.
The purpose of this project was to discover how the pH level affects corrosion rate. The hypothesis was if the pH level affects the corrosion rate, then the lower the pH level is quicker the corrosion rate would be. This will happen because liquids below the pH level of 7 possess stronger acidic attributes. The effect of pH level on corrosion rate was determined by depositing a copper penny in each of three plastic cups, and then three different liquids by their pH levels, were assigned to be displaced into each cup formulating a chemical reaction to be observed. The results collected during this investigation contradicted with the intended result, this experiment was conducted to determine corrosion rate; Dana Puti Vingear (pH level: 4.5) 4 2/3 days, Tropicana Orange Juice (pH level 3.88) 6 1/3 days, and Sprite (pH level: 3.4) 8 days. The results showed that the hypothesis was refuted. This happened because the preconceived idea was that the liquid with the lowest pH level; Sprite, would have the quickest corrosion rate. Dana Puti Vinegar had the quickest corrosion rate proving the statement wrong, it was discovered that it contains ethanoic acid; acid containing twice the amount of carbon dioxide than a regular acid. To further understand this topic, future research could include; how does the amount of liquid incorporated affect the corrosion rate, how does the temperature of the liquid affect the corrosion rate, and how does the purity of iron affect the corrosion rate?
2. In the large beaker, put water and boil it completely. After that, remove the beaker from heat. 3. Sample tubes (A-D) should be labeled and capped tightly.
As all the operators and mechanics are trained properly and qualified through adequate testes and examinations, they would be capable to consider about the risk that corrosion will be caused by salt water. Besides, following the authority regulations, they should also carry out any extra inspections specifically required according to the status of aircraft (eg: age, structural and functional properties etc) ensure the aging aircraft was not in risk or damages were made to the aircraft during the flight. (In this case, if inspection is carried out after each flight, accident will be prevented.)
tube. Add 6 mL of 0.1M HCl to the first test tube, then 0.1M KMnO4 and