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Aluminum, for example, is the most common metal in the Earth's crust, occurring in all sorts of minerals. However, it isn't economically worthwhile to extract it …
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Bauxite is the primary aluminium ore (or main source of aluminium), which contains about 30–50% of alumina along with trace elements, such as calcium, sodium, zinc, gallium and REEs (Ochsenkühn-Petropulu et al., 1995; Smirnov and Molchanova, 1997). The Bayer process is applied to extract aluminium from bauxite, whereas it generates a solid ...
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The ores must be processed to extract the metals of interest from the waste rock and from the ore minerals. Figure (PageIndex{2}) : Three Common Ores. (left) Iron ore, (middle) …
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Aluminum was a semiprecious metal before Hall's discovery of this economical method to release it from its ore. His invention, brought into commercial-scale production by the Pittsburgh Reduction Company (now known as Alcoa), made this light, lustrous and non-rusting metal readily available and was the basis of the aluminum industry in North ...
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As the minerals are weathered they gradually breakdown into various forms of hydrated aluminum oxide, Al 2 O 3 .xH 2 O, known as bauxite. The bauxite is purified by the Bayer Process. First the ore is mixed with a hot concentrated solution of sodium hydroxide. The NaOH will dissolve the oxides of aluminum and silicon but not other …
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Name the most common ore of the metal aluminium from which the metal is extracted. Write the chemical formula of the ore. Answer. Bauxite [Al 2 O 3.2H 2 O] Question 6(2018) Name the process by which impure ore of …
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Aluminum processing - Smelting, Refining, Alloying: Although there are several methods of producing aluminum, only one is used commercially. The Deville process, which involves direct reaction of metallic sodium with aluminum chloride, was the basis of aluminum production in the late 19th century, but it has been abandoned in favour of the more …
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The aluminum oxide has too high a melting point to electrolyse on its own. The usual aluminum ore is bauxite. Bauxite is essentially an impure aluminum oxide. The major impurities include iron …
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The most common compound is sodium chloride or salt. Sodium occurs in many minerals, such as cryolite, soda niter, zeolite, amphibole, and sodalite. The top …
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Explain with the help of the equation of the reaction involved. (e) Name three other metal s which are extracted in a manner similar to sodium. View Solution. Click here:point_up_2:to get an answer to your question :writing_hand:out of sodium and sulfur which is a metal explain its reaction with the.
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A l 2 O 3 dissolves to form sodium meta-aluminate and silica dissolves to form sodium silicate leaving behind F e 2 O 3, T i O 2 ... Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula. ... Explain with the help of an equation. (d) Name the electrode at which aluminium metal is produced. (e ...
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IGCSE Chemistry CIE Topic Questions 9. Metals 9.3 Extraction of Metals. Iron is a transition element. Which of the following statements about transition elements are correct? Tick three boxes. The metals are highly coloured e.g. yellow, green, blue. The metals have low melting points.
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CAUTION: Always handle sodium metal with care. Dry it by pressing between the folds of a filter paper. Put it on a watch-glass and try to cut it with a knife. Question 1. What do you observe? Answer: Observation: Metals are generally hard, but sodium is a soft metal. We observe that sodium metal cuts with the help of knife. …
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Ores are those minerals from which metals are extracted commercially and economically. Like Bauxite (Al 2 O 3 2H 2 O) is the ore of Aluminium which contains 50% to 70% of Aluminium Oxide. Elements ...
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Q. (a) Name the metal which is extracted from haematite ore? (b) Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula. (c) How is aluminium metal extracted? Explain with the help of an equation. (d) Name the electrode at which aluminium metal is produced.
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Q. (a) Name the metal which is extracted from haematite ore. (b) Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula. (c) How is aluminium metal extracted? Explain with the help of an equation. (d) Name the electrode at which aluminium metal is produced.
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The method used to extract a given metal from its ore depends upon the reactivity of the metal and how stable the ore is. In each case the metal ions in the compound gain electrons to form atoms ...
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Name the following metals. i A metal present in cryolite other than sodium.ii A metal which is unaffected by dilute or concentrated acids. iii A metal present in period 3, group 1 of the periodic table. ... Cryolite is Na 3 AlF 6 (sodium hexafluoro aluminate) therefore other than sodium, it also contains Aluminium. (ii) Platinum is a metal that ...
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The main ore of sodium is Halite or most commonly known as rock salt ore. It's main compound is sodium chloride. On the other hand, the main ore of aluminum is bauxite ore. Bauxite ore's main compound is aluminum oxide or known as alumina.
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Name the following: Main ore of aluminium. In the extraction of aluminium: Name the process of concentration of bauxite. M is a metal above hydrogen in the activity series and its oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity.
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• An ore is a mineral that contains enough metal to make it worth extracting the metal. Carbon can be used to extract metals from some metal oxides. • A metal can either be reduced or oxidised in a …
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Aluminum processing - Ores, Refining, Alloying: Aluminum is the third most abundant element on Earth's surface. Only oxygen and silicon are more common. Earth's crust to a depth of 16 km (10 miles) contains 8 percent aluminum. Aluminum has a strong tendency to combine with other common elements and so rarely occurs in nature in the metallic …
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A metal present in cryolite other than sodium. The chemical formula of cryolite is N aAlF 6. We know that flourine is a non metal. So the another metal present in cryolite is aluminium. Also cryolite is an ore of aluminium. Was this answer helpful? A metal present in cryolite other than sodium.
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Question 15: (i) (a) Give the common name of an ore, from which aluminium is extracted. (b) Name the process of its extraction and describe it. ... When aluminium metal reacts with sodium hydroxide solution, hydrogen gas is liberated. (b) Hydrogen gas is generally liberated when metals react with dilute acid. Figure/Table Based Questions.
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The Preparation of Sodium. The most important method for the production of sodium is the electrolysis of molten sodium chloride; the set-up is a Downs cell, shown in Figure 18.10. The reaction involved in this process is: 2NaCl(l) − →−−−−−−600°Celectrolysis 2Na(l) +Cl2(g) 2NaCl ( l) → 600 °C electrolysis 2Na ( l) + Cl 2 ( g ...
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In Bayer's process, the bauxite ore is first crushed and then it is leached by heating with hot concentrated caustic soda (NaOH) solution under high pressure for 2 to 8 hrs at 140 to 150 °C in a tank called a digester. Aluminium oxide, being amphoteric in nature, dissolves in an aqueous NaOH solution, forming water-soluble sodium aluminate.
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WEB3. List of Important Metals and their ores. Ore - Ores are naturally occurring rocks that contain sufficient amounts of metals or metal compounds to make extraction feasible. …
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THE EXTRACTION OF METALS - AN INTRODUCTION. 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. Details for the extraction of aluminium, copper, iron and titanium are given ...
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Aluminium Ore. Ores of Aluminium. Aluminium is a highly reactive metal, belonging to the IIIA group of the periodic table. In nature, aluminium is …
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From amongst the metals sodium, calcium, aluminium, copper and magnesium, name the metal (i) which reacts with water only on boiling and ... How is zinc extracted from its ore? (b) Name two metals that can be used to reduce metal oxides to metals. (CBSE 2012) Answer: (a) Roasting: It is a process in which sulphide ore is …
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