Question

Electrolysis of lead bromide is carried out in an :

• A. Aluminium vessel
• B. Clay crucible
• C. Silica crucible
• D. Glass vessel

Answer 1

The correct option is C

Silica crucible

Step 1: Explanation for correct option:

Electrolysis of lead Bromide is carried out in a silica crucible

The QC (Quartz-crucible) of high purity Silica (${\mathrm{SiO}}_2$) material is a transparent container that can withstand extremely high temperatures while remaining chemically inert, resulting in non-contaminated findings. Thermal shock resistance is also a must for these vessels.

${\mathrm{Pb}}^{2+}\left(aq\right)+2{\mathrm{e}}^{-}\to \mathrm{Pb}\left(l\right)$

$2{\mathrm{Br}}^{-}\left(aq\right)-2{\mathrm{e}}^{-}\to {\mathrm{Br}}_2\left(g\right)$

Step 2: Explanation for Incorrect option:

(a) Aluminum vessel

vessels made of aluminum The most often used cooking utensils are made of aluminum. This is for a variety of reasons. To begin with, aluminum containers are the least expensive of all the metals.

(b) Clay crucible

Clay crucibles can withstand high temperatures, but they must be handled differently than metal crucibles. Clay has an issue with temperature shock. It appears to be a simple fix, requiring only that the crucible be placed on or in some hot coals after usage to let it cool slowly. You should cease using a crucible if it fractures.

(d) Glass vessel

A carbon-steel body with a bonded inner lining of carefully manufactured glass is typical for glass-lined vessels. Several oxides and silicates make up the glass. It's mixed and heated to the point of melting, then dumped via a chute, immediately cooled, and hardened into frit-like particles.