Question

A scrap metal dealer gets a huge consignment of crude metallic lead. For a profitable deal, he needs to refine the metal using electrolysis. Which one of the following is a good choice for an electrolyte?

• A. PbI₂
• B. PbCl₂
• C. PbSiF₆
• D. All of the above

Answer 1

The correct option is C

PbSiF₆

$PbSi{F}_6$ is the preferred choice of electrolyte. Sometimes a combination of $PbSi{F}_6$ and $H_{2}Si{F}_6$ is used in the electrolytic refining process. (Impure or crude lead is the anode while a pure lead cathode is used).