According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature?

Question

According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature? (A)  Al2O3  (B)  Cu2O  (C)  MgO  (D)  ZnO

Tardigrade Admin · Accepted Answer

In the graph of Δ rG° vs T for formation of oxides, the Cu2O line is almost at the top. So, it is quite easy to reduce oxide ores of copper directly to the metal by heating with coke (both the lines of C, CO and C,CO2 are at much lower temperature (500-600 K). Cu2O+C xrightarrow2Cu+CO

Q. According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature?

$A l_{2} O_{3}$

$C u_{2} O$

$M g O$

$Z n O$

$F e O$

Q. According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which one of the following oxides at the lowest temperature?

Al2​O3​

Cu2​O

MgO

ZnO

FeO

In the graph of Δr​G∘vsT for formation of oxides, the Cu2​O line is almost at the top. So, it is quite easy to reduce oxide ores of copper directly to the metal by heating with coke (both the lines of C, CO and C,CO2​ are at much lower temperature (500-600 K). Cu2​O+C​2Cu+CO

$A l_{2} O_{3}$

$C u_{2} O$

$M g O$

$Z n O$

$F e O$