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A metal (E) is stored under kerosene. When a small piece of it is left open in the air, it catches fire. The process by which the metal is obtained from its molten chloride is
- a)Electrolytic reduction
- b)Electrolytic refining
- c)Roasting
- d)Calcinations
- e)None of the above/More than one of the above
Correct answer is option 'A'. Can you explain this answer?
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A metal (E) is stored under kerosene. When a small piece of it is lef...
Answer:
The process by which the metal is obtained from its molten chloride is Electrolytic reduction.
Explanation:
Electrolytic reduction is a process used to extract metals from their ores. In this process, a metal ion in the molten form is reduced to its elemental form using electricity.
Steps involved in electrolytic reduction:
1. Molten chloride preparation: The metal chloride is first melted by heating it to a high temperature, usually above its melting point. This forms a molten chloride.
2. Electrolysis setup: A suitable electrolytic cell is set up for the electrolysis process. The cell consists of an anode and a cathode, which are usually made of inert materials like graphite or platinum.
3. Electrolyte: The molten chloride acts as the electrolyte, containing metal ions that are to be reduced.
4. Electric current: A direct electric current is passed through the electrolyte. The anode is connected to the positive terminal of the power supply, while the cathode is connected to the negative terminal.
5. Reduction at cathode: Metal ions from the molten chloride are attracted to the cathode due to its negative charge. At the cathode, these metal ions gain electrons and are reduced, forming the elemental metal.
6. Oxidation at anode: Chloride ions from the molten chloride are attracted to the anode due to its positive charge. At the anode, these chloride ions lose electrons and are oxidized, forming chlorine gas.
7. Collection of metal: The elemental metal formed at the cathode is collected and further processed as required.
In the given scenario, the metal (E) is stored under kerosene to prevent it from reacting with moisture or oxygen in the air. However, when a small piece of the metal is left open in the air, it catches fire. This indicates that the metal is highly reactive and can undergo a rapid oxidation reaction with oxygen in the air, resulting in combustion.
Therefore, the most suitable method for obtaining the metal from its molten chloride in this case would be electrolytic reduction. This process allows for controlled reduction of the metal ions to its elemental form without the presence of oxygen or moisture in the air, minimizing the risk of combustion.
The process by which the metal is obtained from its molten chloride is Electrolytic reduction.
Explanation:
Electrolytic reduction is a process used to extract metals from their ores. In this process, a metal ion in the molten form is reduced to its elemental form using electricity.
Steps involved in electrolytic reduction:
1. Molten chloride preparation: The metal chloride is first melted by heating it to a high temperature, usually above its melting point. This forms a molten chloride.
2. Electrolysis setup: A suitable electrolytic cell is set up for the electrolysis process. The cell consists of an anode and a cathode, which are usually made of inert materials like graphite or platinum.
3. Electrolyte: The molten chloride acts as the electrolyte, containing metal ions that are to be reduced.
4. Electric current: A direct electric current is passed through the electrolyte. The anode is connected to the positive terminal of the power supply, while the cathode is connected to the negative terminal.
5. Reduction at cathode: Metal ions from the molten chloride are attracted to the cathode due to its negative charge. At the cathode, these metal ions gain electrons and are reduced, forming the elemental metal.
6. Oxidation at anode: Chloride ions from the molten chloride are attracted to the anode due to its positive charge. At the anode, these chloride ions lose electrons and are oxidized, forming chlorine gas.
7. Collection of metal: The elemental metal formed at the cathode is collected and further processed as required.
In the given scenario, the metal (E) is stored under kerosene to prevent it from reacting with moisture or oxygen in the air. However, when a small piece of the metal is left open in the air, it catches fire. This indicates that the metal is highly reactive and can undergo a rapid oxidation reaction with oxygen in the air, resulting in combustion.
Therefore, the most suitable method for obtaining the metal from its molten chloride in this case would be electrolytic reduction. This process allows for controlled reduction of the metal ions to its elemental form without the presence of oxygen or moisture in the air, minimizing the risk of combustion.
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A metal (E) is stored under kerosene. When a small piece of it is lef...
A metal (E) is stored under kerosene. When a small piece of it is left open in the air, it catches fire. The process by which the metal is obtained from its molten chloride is electrolytic reduction.
- Since metal is very reactive it cannot be obtained from their compounds by heating with carbon. For example, carbon cannot reduce the oxides of sodium, magnesium, calcium, aluminium, etc., to the respective metals. This is because these metals have more affinity for oxygen than carbon. These metals are obtained by electrolytic reduction
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A metal (E) is stored under kerosene. When a small piece of it is left open in the air, it catches fire. The process by which the metal is obtained from its molten chloride isa)Electrolytic reductionb)Electrolytic refiningc)Roastingd)Calcinationse)None of the above/More than one of the aboveCorrect answer is option 'A'. Can you explain this answer?
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