During the electrolysis of molten lead bromide which of the following takes place
Lead is deposited at the cathode
The explanation for the correct option:
(D) Lead is deposited at the cathode:
During the electrolysis of molten Lead bromide ,
At the anode, the bromide ion loses electrons to release bromine.
At the cathode, the lead ion undergoes reduction by gaining two electrons.
During electrolysis of lead bromide, bromine is released at the anode and lead is deposited at the cathode.
The explanation for the incorrect option:
(A) Bromine is released at the cathode: Bromine is released at the anode, during the electrolysis of molten lead bromide. This option is wrong.
(B) Lead is deposited at the anode: Lead is deposited at the cathode. Thus the option is wrong.
(C) Bromine ions gain electrons: Bromide ion loses electrons to form bromine. Thus the option is wrong
Therefore, option (D) is correct. i.e., during the electrolysis of molten Lead bromide lead is deposited at the cathode.