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The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?
- a)potassium is solid and sodium distills off at 850°C
- b)sodium is more reactive than potassium at 850°C
- c)potassium being more volatile and distills off thus shifting the reaction forward
- d)sodium has less affinity to chloride ions in the presence of potassium ion
Correct answer is option 'C'. Can you explain this answer?
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Commercial Preparation of Potassium
The commercial method of preparing potassium involves the reduction of molten potassium chloride (KCl) using metallic sodium at a high temperature of 850°C. This process is underpinned by several key factors related to the properties of potassium and sodium.
Reason for the Process: Volatility of Potassium
- Potassium (K) is more volatile than sodium (Na). At 850°C, potassium has a tendency to vaporize due to its lower boiling point compared to sodium.
- As the reaction proceeds, potassium is produced and quickly vaporizes, allowing it to be collected separately. This vaporization shifts the reaction equilibrium to favor the production of more potassium.
Reaction Dynamics
- The reduction reaction can be represented simplistically as follows:
KCl (molten) + Na → K (vapor) + NaCl
- The formation of gaseous potassium effectively reduces the concentration of potassium ions in the molten salt mixture, thereby driving the reaction forward according to Le Chatelier's principle.
Role of Sodium
- Sodium, being more reactive than potassium, is capable of reducing KCl to potassium. However, it does not vaporize at the same rate, thus remaining in the system to continue the reduction process.
Conclusion
- The selection of 850°C is crucial as it provides the required thermal energy for the reaction while enabling the potassium to distill off, ensuring a continuous removal and further production of potassium.
In summary, the commercial preparation of potassium by reducing molten KCl with sodium is primarily based on the volatility of potassium, which allows for its effective separation and continuous production.
The commercial method of preparing potassium involves the reduction of molten potassium chloride (KCl) using metallic sodium at a high temperature of 850°C. This process is underpinned by several key factors related to the properties of potassium and sodium.
Reason for the Process: Volatility of Potassium
- Potassium (K) is more volatile than sodium (Na). At 850°C, potassium has a tendency to vaporize due to its lower boiling point compared to sodium.
- As the reaction proceeds, potassium is produced and quickly vaporizes, allowing it to be collected separately. This vaporization shifts the reaction equilibrium to favor the production of more potassium.
Reaction Dynamics
- The reduction reaction can be represented simplistically as follows:
KCl (molten) + Na → K (vapor) + NaCl
- The formation of gaseous potassium effectively reduces the concentration of potassium ions in the molten salt mixture, thereby driving the reaction forward according to Le Chatelier's principle.
Role of Sodium
- Sodium, being more reactive than potassium, is capable of reducing KCl to potassium. However, it does not vaporize at the same rate, thus remaining in the system to continue the reduction process.
Conclusion
- The selection of 850°C is crucial as it provides the required thermal energy for the reaction while enabling the potassium to distill off, ensuring a continuous removal and further production of potassium.
In summary, the commercial preparation of potassium by reducing molten KCl with sodium is primarily based on the volatility of potassium, which allows for its effective separation and continuous production.
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The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer?
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The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer?.
The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer?.
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The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of The commercial method of preparation of potassium by reduction of molten KCl with metallic sodium at 850°C is based on the fact that -?a)potassium is solid and sodium distills off at 850°Cb)sodium is more reactive than potassium at 850°Cc)potassium being more volatile and distills off thus shifting the reaction forwardd)sodium has less affinity to chloride ions in the presence of potassium ionCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
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