The element atomic number 24 is very important in the industrial world. It is used in nonferrous alloys such as stainless steel, in order to increase its hardness and prevent corrosion and oxidation. Chromium is only found in one ore, the mineral Chromite. Chromites composition is iron magnesium oxide [(Fe, Mg) Cr2O4]. Occasionally, magnesium will alternate for iron, and aluminum and ferric ions will substitute for chromium. In this audition we will hope to figure out whether or not the unknown sample contains the very important mineral Chromite.
The try will consist of a process called hydrometallurgy. Hydrometallurgy is a proficiency that uses aqueous stem chemistry to recover metals from minerals, ores and salts. Extracting the metal from the firmness of purpose is the first step in the process of hydrometallurgy. A owing(p) way to do extraction is leaching, in which the ore is dissolved into an dot or base. Then the leached solution is purified and the waste can be discarded. Lastly the metal is precipitated through chemical or electrolytic capacitor processes.
This lab will also rely on few skills and techniques that were utilized in previous experiments, such as the exploitation of amphoteric metals, amphoteric hydroxide solutions, and complex ion approach patternation.
Amphoterism is the ability of a substance to react with either bases or acids. An example of an amphoteric metal is Beryllium. Beryllium and all other amphoteric metals form insoluble hydroxides in limited hydroxide solutions and soluble, complex ions when they atomic number 18 in the presence of excess hydroxide solutions. Similar to Beryllium, coat and Chromium ar amphoteric, but Iron and Magnesium are not amphoteric, meaning that they form insoluble precipitates in radical solutions like excess hydroxide.
In this experiment, the unknown sample solution will be mixed with water to dissolve the ions that could be present in the solution (Iron, Chromium, and Magnesium). Then solid zinc will be added to the...If you want to get a rich essay, order it on our website: Ordercustompaper.com
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