Answer :
The answer is (4) at the cathode, where reduction occurs. The Na+ gains one electron and become Na(l). So the reaction occurs at cathode and is reduction reaction.
Answer : The correct option is, (4) at the cathode, where reduction occurs
Explanation :
Electrolytic cell : It is the cell in which the chemical reaction occurs by passing of the current from external source.
In this electrolytic cell, the oxidation occurs at anode that is a positive electrode and reduction occurs at cathode that is a negative electrode.
The given balanced chemical reaction is,
[tex]2NaCl(l)\rightarrow 2Na(l)+Cl_2(g)[/tex]
On passing electricity in the molten NaCl, Na and chlorine gas are obtained at cathode and anode respectively.
The half-cell reaction are :
At cathode : [tex]2Na^+2e^-\rightarrow 2Na[/tex] (Reduction)
At anode : [tex]2Cl^-\rightarrow Cl_2+2e^-[/tex] (Oxidation)
Hence, from this we conclude that, Na(l) produced in the cell at the cathode, where reduction occurs.
