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The methods chiefly used for the extraction of lead and tin from their ores are respectively:
- a)self reduction and carbon reduction
- b)self reduction and electrolytic reduction
- c)carbon reduction and self reduction
- d)cyanide process and carbon reduction
Correct answer is option 'A'. Can you explain this answer?
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The methods chiefly used for the extraction of lead and tin from their...
Lead Extraction:
1. Method: Self Reduction
- Lead is primarily extracted from its sulfide ore, galena (PbS).
- In the self-reduction process, the ore is heated in a furnace with carbon (C) or coke.
- The carbon reacts with the oxygen in the ore to form carbon monoxide gas (CO), which is then reduced by the carbon to produce lead metal (Pb).
- The overall reaction can be represented as follows:
PbS + 2C ⟶ Pb + 2CO
Tin Extraction:
2. Method: Carbon Reduction
- Tin is mainly extracted from its oxide ore, cassiterite (SnO2).
- In the carbon reduction process, the ore is mixed with carbon (C) and heated in a furnace.
- The carbon reacts with the oxygen in the ore to form carbon dioxide gas (CO2) and tin metal (Sn).
- The overall reaction can be represented as follows:
SnO2 + 2C ⟶ Sn + 2CO2
Comparison of Methods:
- Lead extraction uses the self-reduction method, while tin extraction uses the carbon reduction method.
- Self-reduction involves heating the ore with carbon or coke, resulting in the reduction of the metal by the carbon present in the reaction mixture.
- Carbon reduction, on the other hand, involves heating the ore with carbon to remove the oxygen and obtain the metal.
- Both methods rely on the reducing properties of carbon to extract the metal from its ore.
- The choice of method depends on the chemical properties of the ore and the desired purity of the extracted metal.
Significance:
- The self-reduction method is commonly used for the extraction of lead because it is effective and relatively simple.
- Lead has a low melting point and is easily reduced by carbon, making self-reduction an efficient method for its extraction.
- Tin, on the other hand, has a higher melting point and is not easily reduced by carbon alone. Hence, the carbon reduction method is used for tin extraction.
- These extraction methods are important in obtaining lead and tin, which are widely used in various industries, including automotive, construction, and electronics.
Conclusion:
- The methods chiefly used for the extraction of lead and tin from their ores are self-reduction and carbon reduction, respectively.
- Self-reduction is used for lead extraction, while carbon reduction is used for tin extraction.
- These methods rely on the reducing properties of carbon to obtain the metals from their respective ores.
1. Method: Self Reduction
- Lead is primarily extracted from its sulfide ore, galena (PbS).
- In the self-reduction process, the ore is heated in a furnace with carbon (C) or coke.
- The carbon reacts with the oxygen in the ore to form carbon monoxide gas (CO), which is then reduced by the carbon to produce lead metal (Pb).
- The overall reaction can be represented as follows:
PbS + 2C ⟶ Pb + 2CO
Tin Extraction:
2. Method: Carbon Reduction
- Tin is mainly extracted from its oxide ore, cassiterite (SnO2).
- In the carbon reduction process, the ore is mixed with carbon (C) and heated in a furnace.
- The carbon reacts with the oxygen in the ore to form carbon dioxide gas (CO2) and tin metal (Sn).
- The overall reaction can be represented as follows:
SnO2 + 2C ⟶ Sn + 2CO2
Comparison of Methods:
- Lead extraction uses the self-reduction method, while tin extraction uses the carbon reduction method.
- Self-reduction involves heating the ore with carbon or coke, resulting in the reduction of the metal by the carbon present in the reaction mixture.
- Carbon reduction, on the other hand, involves heating the ore with carbon to remove the oxygen and obtain the metal.
- Both methods rely on the reducing properties of carbon to extract the metal from its ore.
- The choice of method depends on the chemical properties of the ore and the desired purity of the extracted metal.
Significance:
- The self-reduction method is commonly used for the extraction of lead because it is effective and relatively simple.
- Lead has a low melting point and is easily reduced by carbon, making self-reduction an efficient method for its extraction.
- Tin, on the other hand, has a higher melting point and is not easily reduced by carbon alone. Hence, the carbon reduction method is used for tin extraction.
- These extraction methods are important in obtaining lead and tin, which are widely used in various industries, including automotive, construction, and electronics.
Conclusion:
- The methods chiefly used for the extraction of lead and tin from their ores are self-reduction and carbon reduction, respectively.
- Self-reduction is used for lead extraction, while carbon reduction is used for tin extraction.
- These methods rely on the reducing properties of carbon to obtain the metals from their respective ores.
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The methods chiefly used for the extraction of lead and tin from their ores are respectively:a)self reduction and carbon reductionb)self reduction and electrolytic reductionc)carbon reduction and self reductiond)cyanide process and carbon reductionCorrect answer is option 'A'. Can you explain this answer?
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