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Extracting copper from Malachite.

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Extracting copper from Malachite Introduction Oxidation and reduction both occur together. If one substance is oxidized, another is reduced. A process where oxidation and reduction are taking place together is called Redox Reaction. An example is shown below for my explanation- If I take a mixture of Lead Oxide and Carbon heated together, the following reactions shall take place- Pbo (s) Pb(s) + CO (g) Lead Oxide + Carbon Lead + Carbon Monoxide In the above reaction, Lead Oxide is losing oxygen and forming lead. Lead oxide is, therefore, being reduced. Carbon is gaining oxygen when it forms Carbon Monoxide: Carbon is being oxidized. Oxidation and reduction are both taking place. This is called a Redox Reaction. Carbon is the substance which is necessary for the reduction to take place because it removes the oxygen. Carbon is called the oxidizing agent. A reducing agent is a substance which reduces some other substances but it is itself oxidized. Common reducing agents include Hydrogen, Carbon, Carbon Monoxide and metals. Common Oxidizing agents include Oxygen, Chlorine, and concentrated Sulphuric acid and concentrated Nitric acid. Method 1. I had placed 5g of Malachite powder into a large test tube and had heated it gently until it turns black and stops rising in the test tube. 2. ...read more.


= 0.40 Labour = �10.00 per hr 1 hour = 10.00 Filter paper = �1.30 for 100 1 = 0.13 Total cost = �14.01 We made = 0.07g Per gram = 14.01/ 0.07 = �2.14p Results Calculation of the yield- Relative Atomic mass = Copper = 63.5g Oxygen = 16g Carbon = 12g Relative molecular mass for Copper Carbonate CuCo3 = 63.5 + (3x16) = 63.5 + 48 = 123.5g 123.5g of Copper Carbonate should make 63.5 of copper. 5g of Copper Carbonate was used. Theoretical yield = 5 x 63.5 / 123.5 = 2.57g of copper. Actual yield = 0.07 / 2.57 x 100 = 2.57%. Some other important equation used in the experiment as given below- Copper Carbonate Copper Oxide + Carbon di Oxide 2CuCo3 2Cuo + 2Co2 Copper Oxide + Carbon Copper + Carbon di Oxide Cuo + C Cu + Co2 Evaluation The reason why we didn't get 100% yield is mentioned below- * Firstly, when I had to measure out the Carbon and the Malachite powder I could have made a mistake in mistake which would have lead my experiment inaccurate. * Secondly, while I was heating the test tube some of the Malachite powder could have popped out while it was raising, again leading my experiment inaccurate. ...read more.


These liquid products are drained from the furnace at regular intervals. The hot air that was blown into the bottom of the furnaces ascends to the top in 6- 8 hours after going through numerous chemical reactions. Once a blast furnace is started, it will continuously run for four to ten years with a short stop for maintenance. Image for Blast Furnace Definitions related to Extraction Metallurgy - This is a process that involves the extraction of metals from their ores and refining them is known as Metallurgy. Minerals - The natural material in which the metals or their compounds occur in the earth are called minerals. Ores - Those minerals from which the metals can be extracted profitably are called Ores. Gangue - The rocky impurities and earthly particles, present in an ore are called Gangue. Extraction of Aluminium Aluminium is extracted from purified Aluminium oxide by electrolysis. However, Aluminium Oxide has a high melting point and is readily not soluble in water. Aluminium Extraction At the working temperature of the cell, the oxygen reacts with the Carbon of the anode to produce the Carbon di oxide. The anode therefore, has to be replaced frequently. At this process it requires a large amount of electricity which is an inexpensive source. Udit Aggarwal ...read more.

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