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Step 2 More coke is added to the furnace and reduces the carbon dioxide into carbon monoxide a good reducing agent CO 2 g C s → 2CO g Step 3 iron III oxide is reduced
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The main problem in this kind of survey is in measuring distance For detailed work a fibron tape should be used sand and sea water make metal chains useless but for much work pacing is adequate Paces should be frequently calibrated against a tape and with practice the standard pace can be adjusted to take account of differences in terrain
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Transition metals can often be extracted from their ores by heating the ore with a suitable reducing agent in a process known as thermal reduction most reactive elements Group 1 Group 2 aluminium sodium > magnesium > aluminium carbon > zinc > iron > nickel > tin > lead > copper > silver > The chemistry of metal extraction is
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Reduction of metal halides with metals In many cases carbon cannot be used to reduce the metal oxide to the metal as the metal reacts with carbon to form the carbide instead It is possible to avoid this problem by first converting the ore to the chloride and then reducing the chloride with a more reactive metal such as magnesium or sodium
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Jan 1 2022sodium chlorate is dissolved in water to form a solution and a chlorine dioxide generator is added A mixture of sulfur dioxide and air and sulfuric acid are respectively added to the chlorine dioxide generator to react and the generated chlorine dioxide gas is then reacted with hydrogen peroxide liquid caustic soda is reacted to produce a solution containing sodium chlorite
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Good reducing agents include the active metals such as sodium magnesium aluminum and zinc which have relatively small ionization energies and low electro negativities Metal hydrides such as NaH CaH 2 and LiAlH 4 which formally contain the H ion are also good reducing agents
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Jan 1 2022sodium chlorate is dissolved in water to form a solution and a chlorine dioxide generator is added A mixture of sulfur dioxide and air and sulfuric acid are respectively added to the chlorine dioxide generator to react and the generated chlorine dioxide gas is then reacted with hydrogen peroxide liquid caustic soda is reacted to produce a solution containing sodium chlorite
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In this study sodium titanium phosphate/reduced porous graphene oxide NTP/rPGO composites are used as novel electrode materials for hybrid capacitive deionization HCDI The composites are synthesized through assembling the NaTi 2 PO 4 3 precursor with etched graphene oxide under hydrothermal condition
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1 Sodium is used as a reducing agent in the extraction of boron and silicon 2 Sodium is employed as a reducing agent in form of sodium amalgam and as a reagent in Wurtz reaction and in the synthesis of many organic compound 3 It is also used to make tetraethyl lead tetra methyl lead which are used as anti knocking agent for gasoline
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reducing agent is suitable for reducing a metal oxide Which one of the following sulphide ores offers an exception and is concentrated by 1 Sum of the ∆ G values for oxidation of metal chemical leaching and oxidation of reductant should be negative 1 sphalerite 2 argentite 2 Sum of the ∆ G values for oxidation of metal 3 galena 4 copper pyrites and oxidation of reductant should be
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Sodium is a most reactive metal It produces hydrogen and metal hydroxide when it reacts with cold water 2Na S 2H2O l → 2NaOH aq H2 g Iron which is present in the middle of the table of the reactive series when reacted with sulfuric acid produces hydrogen and metal salt namely iron sulphate Fe s H2So4 l → FeSo4 aq H2 g
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Metals are generally extracted by the following steps Ore concentration an ore is never completely pure compound and is found with several other impurities which need to be removed hence increasing the availability of metal for the extraction process Extracting the required metal using a suitable process After choosing a suitable process
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This study investigates how reducing additives governed the vitrification of prepared specimens In the experiments pure CaO/CaCO3 and SiO2 served as the major components of glassy matrix
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The middle of the reactivity series metals is extracted by reducing their oxides with carbon aluminium sodium or calcium Some moderately reactive metals are found as oxides in nature while others are found as carbonates or sulphide ores Metals are now easier to be obtained by reduction from their oxides than from carbonates and sulphides
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Nov 28 2021The middle of the reactivity series metals is extracted by reducing their oxides with carbon aluminium sodium or calcium Some moderately reactive metals are found as oxides in nature while others are found as carbonates or sulphide ores Metals are now easier to be obtained by reduction from their oxides than from carbonates and sulphides
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Carbon has got reducing properties and thus acts as a reducing agent Carbon reduces oxides of metals below it in the electrochemical and activity series to their respective metals This occurs on strong heating and this reaction is used industrially for extraction of metals from their ores PbO s C s → Pb s CO g Fe 2 O 3 s 3C
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The threats to the life and production of crops are exacerbated by climate change and the misuse of chemical pesticides This study was designed to evaluate the effectiveness of biosynthesized silica nanoparticles SiO2 NPs as an alternative to pesticides against early blight disease of eggplant Antifungal activity disease index photosynthetic pigments osmolytes oxidative stress
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1 The cathode produces electrons to reduce sodium ions to sodium atoms or sodium metal by acting as reducing agent Sodium ions are cations therefore they are attracted to the negatively charged cathode and get deposited there Cathode Chloride ions are anions therefore they are attracted to the positively charged anode
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Lithium has an anomalously large and negative electrode potential After Li the values become more large and negative indicating as you rightly say that sodium has the lowest reducing power The reason for the unusual value for lithium is that E0 values are measured in solution whereas ionisation energies are measured in the gaseous phase
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Sodium is the strongest reducing agent Oxidizing and reducing strength of elements depends upon the atomic size ionization enthalpy electropositive and electronegative character and the number of valence electrons The atomic number of sodium is 11 It consists of a single unpaired electron 3s 1 Thus removal of 1 valence electron would
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Jul 11 2024 a Sodium b Calcium c Magnesium Answer Question 6 Give reason for the following i Hydrogen gas is not evolved when most of the metals react with nitric acid ii Zinc oxide is considered as an amphoteric oxide iii Metals conduct electricity Board Term I 2024 Answer
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Many metals can be reduced and extracted in a school laboratory The easiest are iron copper and lead Over several lessons students can be taught how a metal is extracted and reduced from its ore As you introduce each new example increase the complexity of the chemistry This process will continue during GCSE and A level studies
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Metals from K2 and Mapungubwe a technological study of early second millennium material culture with an emphasis on conservation ALI ANSORI 2024 Azania Archaeological Research in Africa iii This information was gathered using analytical techniques such as Raman spectroscopy XRD and SEM EDS
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Exercise Very short answer questions 1 Why is sodium not extracted by carbon reduction process Answer Sodium cannot be extracted by carbon reduction process because it is highly reactive and strongest reducing agent which forms carbide at high temperature instead of giving free metals
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Reducing agent buffering agent complexing agent Noble metal precipitantSodium formate is used in analytical chemistry to precipitate noble metals It is used for tanning leather for dyeing and printing fabrics It acts as an electroplating agent an acidulant in the textile industry a reducing agent a mordant a complexing agent
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If a metal is less reactive than carbon it can be extracted from its oxide by heating with carbon The carbon displaces the metal from the compound and removes the oxygen from the oxide
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Chitosan served as a reducing agent anchoring the metal ions through Ag N coordination bonds and electrostatic attractions thus stabilizing the Ag/TiO2/CS product observed by
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We shall also be discussing techniques in which the loaded organic solution is treated by a reducing gas to produce metal directly Which Metals can be Treated by Solvent Extraction The major applications of solvent extraction in the metallurgical industries stem mainly from the work carried out during the period 1945 55 by the and the for their atomic energy programmes
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The more reactive metal sodium releases electrons easily as it forms its ions These electrons are used to reduce the titanium IV chloride Note This is a good example of a reduction in which the metal isn t originally present as an ion Titanium IV chloride is a covalent liquid
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The second stage involves the reduction of the slag using a carbon based reducing agent Sodium carbonate soda ash or calcium carbonate is also added as a flux to help form the slag of impurities Lead oxides lead sulfate and any antimony oxides are reduced and the result is antimonial lead which may also contain some bismuth and silver
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