Q. During the extraction of copper, the impurity (FeS) is removed as slag by mixing the contaminated copper ore with silica and coke. The molecular formula of slag is
A) ${FeSiO}_{3}$
B) ${Fe}_{2}O_{3}$
C) $FeSi\ (solid)$
D) $FeSi\ (vapour)$
Explanation
(a)
During the extraction of copper, the impurity (FeS) is removed as slag by mixing the contaminated copper ore with silica and coke.
$2FeS + 3O_{2}\ \longrightarrow 2FeO + 2{SO}_{2}$
$FeO + {SiO}_{2}\ \longrightarrow {FeSiO}_{3}$
silica ferrous silicate
(slag)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.