Ncert solutions for class 10. ncert solutions for class 10 social science ncert solutions for class 10 maths. in the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with. chemistry. q3. given below is the steps for extraction of copper from its ore. write the reactions involved.Consult Now
(ii) roasting: in roasting, the ore is heated in a regular supply of air in a furnace at a temperature below the melting point of the metal. some of the reactions involving sulphide ores are: 2zns 3o2 → 2zno 2so2 (6.9) 2pbs 3o2 → 2pbo 2so2 (6.10) 2cu2s 3o2 → 2cu2o 2so2 (6.11) the sulphide ores of copper are heated in.
(iii) extraction of copper directly from sulphide ores is less favourable than that from its oxide ore through reduction. answer: (i) it is done so as to reduce its melting point and increase electrical conductivity. (ii) it is because cr is stronger reducing agent than zn.
1 day ago sulfuric acid solution containing ferric iron is the extractant for industrial heap bioleaching of copper sulfides. to start a heap bioleaching plant, sulfuric acid is usually added to the irrigation solution to maintain adequate acidity (ph 1.0–2.0) for copper dissolution. an industrial practice of heap bioleaching of secondary copper sulfide ore that began with only water irrigation.
1) concentration of the ore: removal of unwanted metals and gangue to purify the ore is done by froth floatation method as it is a sulphide ore. 2) roasting: copper glance (cu 2 s) is roasted in the presence of air. 2cu_2 s( s) 3o_2( g) \ \rightarrow 2cu_2 o( s) 2so_2( g) 3) reduction: copper oxide is then heated in the absence of.
Bacterial consortium for copper extraction from sulphide ore consisting mainly of chalcopyrite braz j microbiol. 2013 oct 30;44(2):5238. doi: 10.1590s151783822013005000043. ecollection 2013. authors e romo 1 , d f weinacker, a b zepeda, c a figueroa, p chavezcrooker, j g farias. affiliation 1 departamento de.
Concise chemistry part ii selina solutions for class 10 chemistry icse, 7 metallurgy. all the solutions of metallurgy chemistry explained in detail by experts to help students prepare for their icse exams. generally, sulphide ores are roasted, so so 2 is given off. the main ore used for the extraction of iron is haematite. b.
Copper is a metal that is present low in the reactivity series. it mainly occurs in nature in the form of sulphide ore which can be converted into the corresponding oxide simply by heating in the absence of air, a process known as roasting.
Copper ores. an ore is a rock containing enough valuable mineral to make it worth extracting. in the case of copper, it is worth extracting when there is about 2 kg of copper per 1,000 kg of ore 0.2 . copper minerals are found in over one hundred varieties, although only a few have been worked for copper on a large scale.
Copper processing is a complicated process that begins with mining of the ore (less than 1 copper) and ends with sheets of 99.99 pure copper called cathodes, which will ultimately be made into products for everyday most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and.
Extraction of metal from an ore depends on the place it has in the reactivity series. following points explain this. metals found at the bottom of reactivity series are least reactive and they are often found in nature in freestate, such as gold, silver, copper, etc. copper and silver are also found in the form of sulphide and oxide ores.
Given below are the steps for extraction of copper from its ore. write the reaction involved. (a) roasting of copper (i) sulphide (b) reduction of copper (i) oxide with copper (i) sulphide. (c) electrolytic refining.
How is copper extracted from its ore class 12 in the extraction of copper from its sulphide ore when ore is subjected to roasting some of it is oxidised to cu2o which reacts with the remaining cu2s to give copper metal. in this process cu2s behaves as reducing agent. draw labelled diagram from the electrolytic refining of copper.
In the extraction of copper from its sulphide ore the metal is formed by reduction of cu 2 o with: (1) fes (2) co (3) cu 2 s (4) so 2 60. the commonest method for the extraction of metals from oxide ores involves – (1) reduction with carbon (2) reduction with aluminium (3) reduction with hydrogen (4) electrolytic method 61.
In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with: (a) copper (i) sulphide. (b) sulphur dioxide. (c) iron (ii) sulphide. (d) carbon monoxide. hint: recollect the concept of metallurgy and extraction of copper. think about the steps involved in the extraction of copper.
In the extraction of copper from its sulphide ore, when ore is subjected to roasting, some of it is oxidised to cu 2 o which reacts with the remaining cu 2 s (sulphide ore) to give copper metal. cu 2 s 2cu 2 o → 6cu so 2 ↑ in this process, cu 2 s behaves as reducing agent.
In the extraction of copper from its sulphide ore, when ore is subjected to roasting, some of it is oxidised to cu2o which reacts with the remaining cu2s (sulphide ore) to give copper2s 2cu2o → 6cu so2 ↑in this process, cu2s behaves as reducing agent.
It is used to separate the gangue from the sulphide ores, especially those of copper, zinc and lead. in this process, the finely powdered ore is mixed with water in a large tank to form a slurry. then some pine oil is added to it. the sulphide ores are preferentially wetted by the pine oil, whereas the gangue particles are wetted by the water.
Given below are the steps for the extraction of copper from its sulphide ore: a)concentration of the ore: removal of unwanted metals and gangue to purify the ore is done by froth floatation method as it is a sulphide ore. b)roasting: copper glance (cu 2 s) is roasted in the presence of air. c) reduction: copper oxide is then heated in the.
How is copper extracted from its sulphide ore answer: copper is found as cuprous sulphide (cu 2 s) in nature. when cu 2 s is heated in air, copper is obtained. question 42. how is mercury extracted from cinnabar (or) extraction of mercury from its ore cinnabar and write the corresponding chemical reaction. answer: cinnabar is an ore of mercury.
Key words: lowgrade ores; copper minerals; column leaching. 1. introduction the highest quantities of copper, lead and zinc in the world are obtained by sulphide ore treatment. the reserves of highgrade ores from which the extraction of nonferrous, rare and noble metals is technologically and economically feasible are becoming scarcer.
Conversion of ore into metal. a) the less reactive metals are extracted by reduction of their oxides by heat alone. for ex:copper and mercury. 1)ore of mercury is cinnabar. mercury oxide is reduced to mercury on heating. hgs (s) 3 o2 (g) – 2 hgo (s) 2 so2 (g).
For the pyrometallurgical method used for the extraction of copper from sulphide ore, which statements isare correct 11478892 . 600 hpbose class 12 board exam will start on 18th nov and class 10 exam will start on 20th nov 2021. qs asia rankings 2022 released, details here .
Ncert solutions for class 10. ncert solutions for class 10 social science; ncert solutions for class 10 maths. in the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with. chemistry. q3. given below is the steps for extraction of copper from its ore. write the reactions involved.
Note: the commonest ore used in the extraction of copper is chalcopyrite also known as copper pyrites and other such sulfides. the percentage of copper in the actual ore is too low for direct extraction of copper to be viable. the concentration of ore is required and it is done by the froth flotation method.
On. the complex carbonaceous sulfide ore is categorized under the sedimenthosted stratiform copper deposits which account for about 20–25 of the world's copper production and reserves (hitzman et al., 2005, misra, 2000).carbonaceous sulfide ores host polymetallic minerals characterized by carbonates (dolomite, calcite, magnesite, etc.) and carbonaceous materials.
Example gold,silver, copper. moderately reactive metals they are found in crust mainly as oxides , sulphides and carbonates . we extract zinc metal from zinc sulphide (zinc blende ore) and extract iron metal from iron oxide(haematite) .
Mercury oxide is formed . the oxide is heated to about 300℃. it gets reduced to form mercury metal. (ii) extraction of copper conc. sulphide ore cu 2 s is roasted in air to form copper oxide. when enough cu 2 s has been converted to cu 2 o, the supply of air is cut. cu 2 o reacts with the remaining cu 2 sto form cu. extraction of moderately reactive metals :.
Metals that aren't extremely reactive are grouped together at the bottom of the reactivity scale. by heating them alone, these metals can be converted to metals. mercury, for example, is extracted from its ore, cinnabar (hgs), using a heating process. heating can also be used to extract copper from its sulphide ore (cu2s).
The compound present in the ore is copper (i) sulphide. its formula is cu 2 s. copper is a less reactive metal; therefore, it is placed at the bottom in the reactivity series. copper is extracted by heating its sulphide ore alone. two steps involved in the extraction of copper metal from concentrated copper glance ore are: 1.
The copper is extracted from sulphide ore by pyrometallurgy which involves reduction of the concentrated ore at high temperature. this process is a dry process. in this process, the sulphide ore is concentrated by froth floatation process. in this process, the sulphide ore is not concentrated by leaching with dil sulphuric acid.
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