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Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.
Q. In self-reduction, the reducing species is
- a)S
- b)O2-
- c)S2-
- d)SO2
Correct answer is option 'C'. Can you explain this answer?
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Copper is the most noble of the first row transition metals and occurs...
Self-reduction in the extraction of copper from chalcopyrite
In the extraction of copper from chalcopyrite ore, self-reduction plays a crucial role. Self-reduction refers to the process where a metal ore is reduced by one of its own compounds without the need for an external reducing agent. In the case of chalcopyrite, the reducing species involved in self-reduction is S2- (sulfide ion).
The role of self-reduction in copper extraction
The extraction of copper from chalcopyrite involves several steps. First, the ore is partially roasted in air to convert a part of the sulfide (CuFeS2) to oxide (CuO). The equation for this reaction is:
2CuFeS2(s) + 4O2(g) -> 2CuO(s) + 2FeO(s) + 4SO2(g)
The next step involves the removal of iron. This is typically done by adding silica (SiO2) as a flux, which reacts with the iron oxide produced in the previous step to form a slag. The equation for this reaction is:
2FeO(s) + SiO2(s) -> 2FeO.SiO2(s)
Finally, self-reduction takes place, where the remaining copper oxide (CuO) is reduced back to copper metal (Cu) by the sulfide ion (S2-) from the original chalcopyrite ore. The equation for this self-reduction reaction is:
CuO(s) + Cu2S(s) -> 2Cu(s) + SO2(g)
Explanation of the correct answer
The reducing species in self-reduction is S2- (sulfide ion), which is option C in the given choices. Sulfide ions are released from the chalcopyrite ore during the self-reduction process and react with the copper oxide to form copper metal. The other options, S (sulfur), O2- (oxide ion), and SO2 (sulfur dioxide), are not involved in the self-reduction process.
In summary, self-reduction is a crucial step in the extraction of copper from chalcopyrite ore. The reducing species in self-reduction is S2- (sulfide ion), which reacts with copper oxide to form copper metal.
In the extraction of copper from chalcopyrite ore, self-reduction plays a crucial role. Self-reduction refers to the process where a metal ore is reduced by one of its own compounds without the need for an external reducing agent. In the case of chalcopyrite, the reducing species involved in self-reduction is S2- (sulfide ion).
The role of self-reduction in copper extraction
The extraction of copper from chalcopyrite involves several steps. First, the ore is partially roasted in air to convert a part of the sulfide (CuFeS2) to oxide (CuO). The equation for this reaction is:
2CuFeS2(s) + 4O2(g) -> 2CuO(s) + 2FeO(s) + 4SO2(g)
The next step involves the removal of iron. This is typically done by adding silica (SiO2) as a flux, which reacts with the iron oxide produced in the previous step to form a slag. The equation for this reaction is:
2FeO(s) + SiO2(s) -> 2FeO.SiO2(s)
Finally, self-reduction takes place, where the remaining copper oxide (CuO) is reduced back to copper metal (Cu) by the sulfide ion (S2-) from the original chalcopyrite ore. The equation for this self-reduction reaction is:
CuO(s) + Cu2S(s) -> 2Cu(s) + SO2(g)
Explanation of the correct answer
The reducing species in self-reduction is S2- (sulfide ion), which is option C in the given choices. Sulfide ions are released from the chalcopyrite ore during the self-reduction process and react with the copper oxide to form copper metal. The other options, S (sulfur), O2- (oxide ion), and SO2 (sulfur dioxide), are not involved in the self-reduction process.
In summary, self-reduction is a crucial step in the extraction of copper from chalcopyrite ore. The reducing species in self-reduction is S2- (sulfide ion), which reacts with copper oxide to form copper metal.
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Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer?
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Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer?.
Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer?.
Solutions for Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
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Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite (CuSO4.5H2O), atacamite (Cu2CI(OH3)), cuprite (Cu2O), copper glance (Cu2S) and malachite (Cu2(OH)2CO3). However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS2). The extraction of copper from chalopyrite involved partial roasting, removal of iron and self-reduction.Q.In self-reduction, the reducing species isa)Sb)O2-c)S2-d)SO2Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Chemistry tests.
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