Question

in the electrolysis of ............ dark reddish brown fumes were observed at the anode and silvery grey metal of ........ was formed at the cathode​

Answer 1

Explanation:

During the electrolysis of lead bromide, Graphite being inert electrode is used as both anode and cathode. Lead bromide dissociates to form Pb

2+

ions are discharged at the cathode as neutral lead atoms by accepting electrons whereas Br

−

ions are discharged at the anode as neutral bromine atoms by giving up electrons.

Hence, a silver-grey deposit of lead is obtained at the cathode and reddish-brown fumes of bromine are obtained at the anode.

Therefore, option C is correct.

Answer 2

Answer:

a silver gray deposite at cathode and reddish brown fumes at anode