what are the physical and chemical methods used to refine platinum?
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Platinum is extracted, processed and purified through a complex series of physical and chemical processes, namely mining, concentrating, smelting and refining. The PGM ore (metal-bearing material in the earth's crust) in the Bushveld is found in horizontal layers usually less than one metre thick.
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Answer: (a) Electrolytic refining is used for metals like Cu, Zn, Ag, Au etc. The method to be used for refining an impure metal depends on the nature of the metals well as on the nature of impurities present in it. So, metals Au (gold) and Cu (copper) are refined by electrolytic refining.
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This page looks at the various factors which influence the choice of method for extracting metals from their ores, including reduction by carbon, reduction by a reactive metal (like sodium or magnesium), and by electrolysis.
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['Identify the cation.', 'Write the correct formula and charge for the cation.', 'Identify the anion.', 'Write the correct formula and charge for the anion.', 'Combine the cation and anion to produce an electrically neutral compound.']
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Platinum (Pt), chemical element, the best known and most widely used of the six platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table. A very heavy, precious, silver-white metal, platinum is soft and ductile and has a high melting point and good resistance to corrosion and chemical attack.
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The catalyst used in the converter is mostly a precious metal such as platinum, palladium and rhodium. Platinum is used as a reduction catalyst and as an oxidation catalyst. Although platinum is a very active catalyst and widely used, it is very expensive and not suitable for all applications.
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['Anode: The anode is where the oxidation reaction takes place. In other words, this is where the metal loses electrons. ... ', 'Cathode: The cathode is where the reduction reaction takes place. This is where the metal electrode gains electrons.']
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['Metal + Nonmetal —> ionic compound (usually)', 'Metal + Polyatomic ion —> ionic compound (usually)', 'Nonmetal + Nonmetal —> covalent compound (usually)', 'Hydrogen + Nonmetal —> covalent compound (usually)']
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['Atomic Number: 20.', 'Atomic Weight: 40.078.', 'Melting Point: 1115 K (842°C or 1548°F)', 'Boiling Point: 1757 K (1484°C or 2703°F)', 'Density: 1.54 grams per cubic centimeter.', 'Phase at Room Temperature: Solid.', 'Element Classification: Metal.', 'Period Number: 4.']
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['burette.', 'white tile (used to see a color change in the solution)', 'pipette.', 'pH indicator (the type depends on the reactants)', 'Erlenmeyer or conical flask.', 'titrant (a standard solution of known concentration; a common example is aqueous sodium carbonate)']
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['Atomic Mass Average: 252.', 'Boiling Point:', 'Coefficient of lineal thermal expansion/K-1: N/A.', 'Conductivity Electrical: Thermal: 0.1 W/cmK.', 'Description: Man made radioactive metal, which is not found in nature.', 'Flammablity Class:', 'Freezing Point: see melting point.', 'Heat of Vaporization: kJ/mol.']
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Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name is derived from the Spanish term platino, meaning "little silver".
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['Answer:', 'Explanation:', 'FeCl2 Fe⁺² Iron (II) + 2Cl⁻¹ Chloride.', 'HNO3 H⁺¹ Hydrogen.']
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For chemical physical separation method, we usually use flotation process, leaching method to do gold mining. Because in the process, we will use chemical to extract gold from ore. Such as flotation reagent, sodium cyanide and eco-friendly gold dressing agent.
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Rhodium, together with ruthenium, palladium, osmium, iridium, and platinum form a group of elements referred to as the platinum group metals (PGM). Rhodium metal is lustrous and silvery white. Rhodium has a higher melting point and lower density than platinum. It has a high reflectance and is hard and durable.
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The most common one is baking soda. Here, you will mix two tablespoons of baking soda with an equal amount of water in a clean container. Stir the solution to form a paste, then use a toothbrush to apply the paste to each terminal. The solution will begin to sizzle as it interacts with the corrosion.
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['Concentration of ores.', 'Conversion of ores into oxides or other desired compounds.', 'Reduction of ores to form crude metals.', 'Refining of metals.']