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In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:
- a)lower the melting point of bauxite
- b)dissolve bauxite and render it a conductor of electricity
- c)protect aluminium produced from oxygen
- d)minimise the heat loss due to radiation
Correct answer is option 'B'. Can you explain this answer?
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In the electrolytic method of obtaining aluminium from purified bauxit...
Answer:
Explanation:
In the electrolytic method of obtaining aluminum from purified bauxite, cryolite is added to the charge. The main purpose of adding cryolite is to dissolve bauxite and render it a conductor of electricity. This helps in the electrolysis process.
The process of electrolysis involves the passage of electric current through a molten or dissolved electrolyte. The electrolyte in this case is a mixture of alumina and cryolite. When an electric current is passed through the mixture, the alumina is broken down into aluminum and oxygen. The oxygen reacts with the carbon anodes to form carbon dioxide gas.
Cryolite is added to the mixture to lower the melting point of the alumina. This helps to reduce the amount of energy required to melt the alumina and also reduces the energy required for the electrolysis process. Cryolite also helps to dissolve the alumina and make it a better conductor of electricity. This is because alumina is a very poor conductor of electricity and needs to be dissolved in a suitable electrolyte to conduct electricity.
In addition, cryolite helps to reduce the amount of heat lost due to radiation. This is because cryolite has a lower melting point than alumina and can therefore absorb more heat. This helps to prevent the loss of heat and reduce the amount of energy required for the electrolysis process.
Conclusion:
Therefore, the correct answer is option B - dissolve bauxite and render it a conductor of electricity. Cryolite is added to the charge to dissolve bauxite and make it a suitable electrolyte to conduct electricity.
Explanation:
In the electrolytic method of obtaining aluminum from purified bauxite, cryolite is added to the charge. The main purpose of adding cryolite is to dissolve bauxite and render it a conductor of electricity. This helps in the electrolysis process.
The process of electrolysis involves the passage of electric current through a molten or dissolved electrolyte. The electrolyte in this case is a mixture of alumina and cryolite. When an electric current is passed through the mixture, the alumina is broken down into aluminum and oxygen. The oxygen reacts with the carbon anodes to form carbon dioxide gas.
Cryolite is added to the mixture to lower the melting point of the alumina. This helps to reduce the amount of energy required to melt the alumina and also reduces the energy required for the electrolysis process. Cryolite also helps to dissolve the alumina and make it a better conductor of electricity. This is because alumina is a very poor conductor of electricity and needs to be dissolved in a suitable electrolyte to conduct electricity.
In addition, cryolite helps to reduce the amount of heat lost due to radiation. This is because cryolite has a lower melting point than alumina and can therefore absorb more heat. This helps to prevent the loss of heat and reduce the amount of energy required for the electrolysis process.
Conclusion:
Therefore, the correct answer is option B - dissolve bauxite and render it a conductor of electricity. Cryolite is added to the charge to dissolve bauxite and make it a suitable electrolyte to conduct electricity.
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In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:a)lower the melting point of bauxiteb)dissolve bauxite and render it a conductor of electricityc)protect aluminium produced from oxygend)minimise the heat loss due to radiationCorrect answer is option 'B'. Can you explain this answer?
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In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:a)lower the melting point of bauxiteb)dissolve bauxite and render it a conductor of electricityc)protect aluminium produced from oxygend)minimise the heat loss due to radiationCorrect answer is option 'B'. 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 In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:a)lower the melting point of bauxiteb)dissolve bauxite and render it a conductor of electricityc)protect aluminium produced from oxygend)minimise the heat loss due to radiationCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:a)lower the melting point of bauxiteb)dissolve bauxite and render it a conductor of electricityc)protect aluminium produced from oxygend)minimise the heat loss due to radiationCorrect answer is option 'B'. Can you explain this answer?.
In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:a)lower the melting point of bauxiteb)dissolve bauxite and render it a conductor of electricityc)protect aluminium produced from oxygend)minimise the heat loss due to radiationCorrect answer is option 'B'. 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 In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:a)lower the melting point of bauxiteb)dissolve bauxite and render it a conductor of electricityc)protect aluminium produced from oxygend)minimise the heat loss due to radiationCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the electrolytic method of obtaining aluminium from purified bauxite, cryolite is added to the charge in order to:a)lower the melting point of bauxiteb)dissolve bauxite and render it a conductor of electricityc)protect aluminium produced from oxygend)minimise the heat loss due to radiationCorrect answer is option 'B'. Can you explain this answer?.
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