Write the chemical equations involved in the extraction of lead from galena by self reduction process.

Question

Write the chemical equations involved in the extraction of lead from galena by self reduction process. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

In the first step, galena is heated in presence of

O_{2}

(limited quantity) in a reverberatory furnace, where

P b S

is partially oxidised to

P b O

:

P b S + \frac{3}{2} O_{2} \to P b O + S O_{2}

In the second step, more

P b S

is added and heated in absence of

O_{2}

, where the following self reduction takes place

P b S + 2 P b O \to 3 P b + S O_{2}

Q. Write the chemical equations involved in the extraction of lead from galena by self reduction process.