Question
Question: Which one of the following electrolyte is used in Down’s process of extracting sodium metal?...
Which one of the following electrolyte is used in Down’s process of extracting sodium metal?
A
NaCl + CaCl2 + KF
B
NaCl
C
NaOH + KCl + KF
D
NaCl + NaOH
Answer
NaCl + CaCl2 + KF
Explanation
Solution
Down's process involves the electrolysis of fused sodium chloride containing CaCl2 & KF using Fe as cathode & graphite as anode at about 600ŗC. CaCl2 & KF are added to decrease fusion temperature (16000C)