In Down’s process, a small amount of KCl is added to NaCl :
(A) to decrease the melting point of NaCl
(B) to increase the electrical conductivity
(C) to maintain electrical contact
(D) to prevent the oxidation of sodium metal formed
Answer
Verified
468.3k+ views
Hint: The NaCl has a very high melting point. It melts at temperature which is very difficult to achieve. The electrical conductivity is sufficiently achieved by other reagents. KCl and KF mixture added to NaCl to overcome the drawback of its very high melting point.
Complete step by step solution:
Let us see what is down’s process and what is its function.
It is the process for extracting sodium by electrolysis of molten sodium chloride (NaCl).
In Down’s cell, the carbon acts as anode and the iron acts as the cathode. The magnesium chloride is the electrolyte which is heated to liquid.
The Sodium chloride has a high melting point of . The sodium can be obtained by electrolysis of sodium chloride in the molten state. The KCl and even KF are added to decrease the melting point of the mixture. This is added so the sodium could be obtained at low temperature.
Thus, the option (A) is the correct answer.
Note: It is an electrochemical method that is used to produce sodium metal and the chlorine gas from sodium chloride. The Sodium is produced at the cathode while the chlorine gas is released at the anode. It is a very good method for the preparation of sodium.
Complete step by step solution:
Let us see what is down’s process and what is its function.
It is the process for extracting sodium by electrolysis of molten sodium chloride (NaCl).
In Down’s cell, the carbon acts as anode and the iron acts as the cathode. The magnesium chloride is the electrolyte which is heated to liquid.
The Sodium chloride has a high melting point of
Thus, the option (A) is the correct answer.
Note: It is an electrochemical method that is used to produce sodium metal and the chlorine gas from sodium chloride. The Sodium is produced at the cathode while the chlorine gas is released at the anode. It is a very good method for the preparation of sodium.
Recently Updated Pages
Master Class 11 Economics: Engaging Questions & Answers for Success
Master Class 11 Business Studies: Engaging Questions & Answers for Success
Master Class 11 Accountancy: Engaging Questions & Answers for Success
Master Class 11 Social Science: Engaging Questions & Answers for Success
Master Class 11 Physics: Engaging Questions & Answers for Success
Master Class 11 Maths: Engaging Questions & Answers for Success
Trending doubts
The reservoir of dam is called Govind Sagar A Jayakwadi class 11 social science CBSE
What problem did Carter face when he reached the mummy class 11 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
Proton was discovered by A Thomson B Rutherford C Chadwick class 11 chemistry CBSE
Petromyzon belongs to class A Osteichthyes B Chondrichthyes class 11 biology CBSE
Comparative account of the alimentary canal and digestive class 11 biology CBSE