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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(OH)3), 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 chalcopyrite involves 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?
Verified Answer
Copper is the most noble of the first row transition metals and occurs...
Cu2S + 2Cu2O → 6Cu + SO2
lnCu2S, sulphur is S2- and in SO2, sulphur is in +4 state.
Hence, S2- is acting as reducing agent.
lnCu2S, sulphur is S2- and in SO2, sulphur is in +4 state.
Hence, S2- is acting as reducing agent.
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Most Upvoted Answer
Copper is the most noble of the first row transition metals and occurs...
In the extraction of copper from chalcopyrite, self-reduction plays a crucial role. Self-reduction refers to a process where a substance is reduced by its own elements or compounds. In this case, self-reduction involves the reduction of copper(II) sulfide (CuFeS2) to copper metal (Cu) by the sulfur present in the compound.
Process of Self-Reduction in Copper Extraction:
1. Partial Roasting: The first step in the extraction of copper from chalcopyrite is partial roasting. Chalcopyrite is heated in the presence of excess oxygen, which leads to the oxidation of a part of the sulfur present in the compound. The reaction can be represented as follows:
CuFeS2 + 3O2 → CuFeO2 + 2SO2
2. Removal of Iron: The resulting product from partial roasting contains iron oxide (CuFeO2) and copper(II) sulfide (CuFeS2). The iron oxide can be separated from the mixture by magnetic separation or by the addition of silica (SiO2), which reacts with iron oxide to form a slag. The reaction can be represented as follows:
CuFeO2 + SiO2 → CuSiO3 + FeO
3. Self-Reduction: The final step in the extraction of copper involves self-reduction. The copper(II) sulfide (CuFeS2) obtained after the removal of iron is heated in the absence of air or oxygen. The sulfur present in the compound acts as the reducing agent and reacts with the copper(II) sulfide to form copper metal and sulfur dioxide gas. The reaction can be represented as follows:
CuFeS2 → Cu + FeS + SO2
Reducing Species in Self-Reduction:
The reducing species in self-reduction is sulfur (S). As mentioned earlier, the sulfur present in copper(II) sulfide (CuFeS2) acts as a reducing agent. It combines with the copper(II) sulfide to form copper metal (Cu) and sulfur dioxide (SO2) gas.
Therefore, the correct answer is option 'C' - S2.
Summary:
- Self-reduction is a crucial step in the extraction of copper from chalcopyrite.
- It involves the reduction of copper(II) sulfide (CuFeS2) to copper metal (Cu) by the sulfur present in the compound.
- The process includes partial roasting, removal of iron, and self-reduction.
- The reducing species in self-reduction is sulfur (S).
- The reaction can be represented as CuFeS2 → Cu + FeS + SO2.
Process of Self-Reduction in Copper Extraction:
1. Partial Roasting: The first step in the extraction of copper from chalcopyrite is partial roasting. Chalcopyrite is heated in the presence of excess oxygen, which leads to the oxidation of a part of the sulfur present in the compound. The reaction can be represented as follows:
CuFeS2 + 3O2 → CuFeO2 + 2SO2
2. Removal of Iron: The resulting product from partial roasting contains iron oxide (CuFeO2) and copper(II) sulfide (CuFeS2). The iron oxide can be separated from the mixture by magnetic separation or by the addition of silica (SiO2), which reacts with iron oxide to form a slag. The reaction can be represented as follows:
CuFeO2 + SiO2 → CuSiO3 + FeO
3. Self-Reduction: The final step in the extraction of copper involves self-reduction. The copper(II) sulfide (CuFeS2) obtained after the removal of iron is heated in the absence of air or oxygen. The sulfur present in the compound acts as the reducing agent and reacts with the copper(II) sulfide to form copper metal and sulfur dioxide gas. The reaction can be represented as follows:
CuFeS2 → Cu + FeS + SO2
Reducing Species in Self-Reduction:
The reducing species in self-reduction is sulfur (S). As mentioned earlier, the sulfur present in copper(II) sulfide (CuFeS2) acts as a reducing agent. It combines with the copper(II) sulfide to form copper metal (Cu) and sulfur dioxide (SO2) gas.
Therefore, the correct answer is option 'C' - S2.
Summary:
- Self-reduction is a crucial step in the extraction of copper from chalcopyrite.
- It involves the reduction of copper(II) sulfide (CuFeS2) to copper metal (Cu) by the sulfur present in the compound.
- The process includes partial roasting, removal of iron, and self-reduction.
- The reducing species in self-reduction is sulfur (S).
- The reaction can be represented as CuFeS2 → Cu + FeS + SO2.
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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(OH)3), 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 chalcopyrite involves 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(OH)3), 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 chalcopyrite involves 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 Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 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(OH)3), 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 chalcopyrite involves 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 Class 12 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(OH)3), 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 chalcopyrite involves 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(OH)3), 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 chalcopyrite involves 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 Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 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(OH)3), 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 chalcopyrite involves 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 Class 12 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(OH)3), 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 chalcopyrite involves 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(OH)3), 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 chalcopyrite involves 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 Class 12.
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Here you can find the meaning 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(OH)3), 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 chalcopyrite involves 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? defined & explained in the simplest way possible. Besides giving the explanation 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(OH)3), 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 chalcopyrite involves 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(OH)3), 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 chalcopyrite involves 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(OH)3), 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 chalcopyrite involves 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(OH)3), 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 chalcopyrite involves 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 Class 12 tests.
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