For extraction of sodium from NaCl, the electrolytic mixture NaCl + Na3AlF6 + CaCl2 is used. During extraction process, only sodium is deposited on cathode but K and Ca do not because

Question

For extraction of sodium from NaCl, the electrolytic mixture NaCl + Na3AlF6 + CaCl2 is used. During extraction process, only sodium is deposited on cathode but K and Ca do not because (A) Na is more reactive than K and Ca (B) Na is less reactive than K and Ca (C) NaCl is less stable than Na3AlF6 and CaCl2 (D) the discharge potential of Na+ is less than that of K+ and Ca2+ ions.

Tardigrade Admin · Accepted Answer

As K and Ca are more reactive than Na they have less discharge potential than Na so they will not discharge

Q. For extraction of sodium from $N a Cl$ , the electrolytic mixture $N a Cl + N a_{3} A l F_{6} + C a C l_{2}$ is used. During extraction process, only sodium is deposited on cathode but K and Ca do not because

$N a$ is more reactive than $K$ and $C a$

$N a$ is less reactive than $K$ and $C a$

$N a Cl$ is less stable than $N a_{3} A l F_{6}$ and $C a C l_{2}$

the discharge potential of $N a^{+}$ is less than that of $K^{+}$ and $C a^{2 +}$ ions.

As $K$ and $C a$ are more reactive than $N a$ & they have less discharge potential than Na so they will not discharge

Q. For extraction of sodium from NaCl, the electrolytic mixture NaCl+Na3​AlF6​+CaCl2​ is used. During extraction process, only sodium is deposited on cathode but K and Ca do not because

Na is more reactive than K and Ca

Na is less reactive than K and Ca

NaCl is less stable than Na3​AlF6​ and CaCl2​

the discharge potential of Na+ is less than that of K+ and Ca2+ ions.