Chemistry Exam > Chemistry Questions > In the commercial electrochemical process for...
Start Learning for Free
In the commercial electrochemical process for aluminium extraction, the electrolyte used as:
- a)Al(OH)3 in NaOH solution
- b)an aqueous solution of Al2(SO4)3
- c)a molten mixture of Al2O3 and Na3AlF6
- d)a molten mixture of AlO(OH) and Al(OH)3
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
In the commercial electrochemical process for aluminium extraction, th...
Electrochemical Process for Aluminium Extraction
In the commercial electrochemical process for aluminium extraction, the electrolyte used is a molten mixture of Al2O3 and Na3AlF6. Let's understand the process in detail.
Electrolysis of Alumina
The process of extracting aluminium from alumina is called the Hall-Heroult process. It involves the electrolysis of alumina (Al2O3) dissolved in a molten mixture of cryolite (Na3AlF6) and fluorspar (CaF2) at a temperature of around 950-980°C.
Electrolyte
The electrolyte used in the Hall-Heroult process for aluminium extraction is a molten mixture of Al2O3 and Na3AlF6. This mixture has a lower melting point than pure alumina, making it easier to work with.
Role of Cryolite
Cryolite (Na3AlF6) acts as a flux and lowers the melting point of alumina. It also dissolves alumina, making it easier to conduct electricity.
Role of Fluorspar
Fluorspar (CaF2) is added to the electrolyte to increase the electrical conductivity of the mixture.
Electrodes
The Hall-Heroult process uses a carbon anode and a cathode made of steel. The carbon anode reacts with the oxygen in alumina to form carbon dioxide, while the steel cathode reduces the aluminium ions to form molten aluminium.
Overall Reaction
The overall reaction that occurs during the electrolysis of alumina is:
2Al2O3 + 3C → 4Al + 3CO2
Conclusion
In the commercial electrochemical process for aluminium extraction, a molten mixture of Al2O3 and Na3AlF6 is used as the electrolyte. This mixture has a lower melting point than pure alumina, making it easier to work with. The process involves the electrolysis of alumina dissolved in the electrolyte at a temperature of around 950-980°C, using a carbon anode and a steel cathode.
In the commercial electrochemical process for aluminium extraction, the electrolyte used is a molten mixture of Al2O3 and Na3AlF6. Let's understand the process in detail.
Electrolysis of Alumina
The process of extracting aluminium from alumina is called the Hall-Heroult process. It involves the electrolysis of alumina (Al2O3) dissolved in a molten mixture of cryolite (Na3AlF6) and fluorspar (CaF2) at a temperature of around 950-980°C.
Electrolyte
The electrolyte used in the Hall-Heroult process for aluminium extraction is a molten mixture of Al2O3 and Na3AlF6. This mixture has a lower melting point than pure alumina, making it easier to work with.
Role of Cryolite
Cryolite (Na3AlF6) acts as a flux and lowers the melting point of alumina. It also dissolves alumina, making it easier to conduct electricity.
Role of Fluorspar
Fluorspar (CaF2) is added to the electrolyte to increase the electrical conductivity of the mixture.
Electrodes
The Hall-Heroult process uses a carbon anode and a cathode made of steel. The carbon anode reacts with the oxygen in alumina to form carbon dioxide, while the steel cathode reduces the aluminium ions to form molten aluminium.
Overall Reaction
The overall reaction that occurs during the electrolysis of alumina is:
2Al2O3 + 3C → 4Al + 3CO2
Conclusion
In the commercial electrochemical process for aluminium extraction, a molten mixture of Al2O3 and Na3AlF6 is used as the electrolyte. This mixture has a lower melting point than pure alumina, making it easier to work with. The process involves the electrolysis of alumina dissolved in the electrolyte at a temperature of around 950-980°C, using a carbon anode and a steel cathode.
|
Explore Courses for Chemistry exam
|
|
In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer?
Question Description
In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. 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 commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. 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 commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer?.
In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. 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 commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. 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 commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer?.
Solutions for In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer?, a detailed solution for In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice In the commercial electrochemical process for aluminium extraction, the electrolyte used as:a)Al(OH)3 in NaOH solutionb)an aqueous solution of Al2(SO4)3c)a molten mixture of Al2O3 and Na3AlF6d)a molten mixture of AlO(OH) and Al(OH)3Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Chemistry tests.
|
|
Explore Courses for Chemistry exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup