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Lab Report Chemistry Lab

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The lab started off by measuring critical materials for the lab: the mass of an an empty 100 mL beaker, mass of beaker and copper chloride together(52.30 g), and the mass of three iron nails(2.73 g). The goal of this experiment is to determine the number of moles of copper and iron that would be produced in the reaction of iron and copper(II) chloride, the ratio of moles of iron to moles of copper, and the percent yield of copper produced. 2.00 grams of copper(II) chloride was added in the beaker to mix with 15 mL of distilled water. Then, three dry nails are placed in the copper(II) chloride solution for approximately 25 minutes. The three nails have to be scraped clean by sandpaper to make the surface of the nail shiny; if the nails are not clean, then some unknown substances might accidentally mix into the reaction and cause variations of the result. This is important because the correct reaction would only appear if the right elements are mixed together, the unknown substances on the iron nails can cause a different reaction to happen that is not expected. …show more content…

After a while, a brownish color substance started to form on the three iron nails. We predicted that the brown substance on the nails is copper because the reaction of copper(II) chloride with iron is a single displacement reaction, so copper would be produced. 0.48 grams of iron was used in the reaction because 2.73 grams subtracted by 2.25 grams is 0.48 grams. The 0.48 grams of iron had to be used in the reaction with copper(II) chloride in order to produce copper, according to the reaction equation: CuCl2+FeFeCl2+Cu. 0.52 grams of copper was produced after pouring out the copper(II) chloride solution and the three iron

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The objectives of this experiment were to use knowledge of chemical formulas and chemical nomenclature to experimentally determine the empirical formula of copper chloride. Common laboratory techniques were used to conduct a reaction between copper chloride and solid aluminum in order to get rid of the water of hydration. The amount of water of hydration in the sample of copper chloride hydrate was calculated by measuring the mass before and after heating the sample. Afterwards, an oxidation-reduction reaction was conducted, resulting in elemental copper.

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At the surface of the water was a thin layer of orange material 5 Signs of Oxidation at the top and bottom of the test tube The top and the bottom of the nail turned orange At the surface of the water was a thin layer of orange material 7 Signs of Oxidation at the top and bottom of the test tube The nail darkened and left some black residue on nail 9 Clear & No Signs of

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The process of combining copper with tin or arsenic showed the creative abilities of early metalworkers and was a turning point that resulted in the creation of bronze. The story of copper's influence is made more fascinating by the secrecy surrounding the origins of these methods. Although the exact beginnings of these methods are still unknown, they certainly combined exploration,

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This element has been known since ancient times and in general, is a shiny, grayish metal that rusts in damp air. This metal is non-toxic and plays a large role in all forms of life, especially human beings. As hemoglobin iron carries oxygen from the lungs to our cells, it keeps human’s alive. In fact, human bodies contain of about 4 grams of iron and need to intake a healthy dose of it daily (Royal Society of Chemistry, Iron). Without iron humans start to face severe health problems, including the development of anemia.

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Then it was treated with alcohol and the resulting iron free residue was a reddish purple color

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