Advertisements
Advertisements
प्रश्न
At temperatures above 1073 K coke can be used to reduce \[\ce{FeO}\] to \[\ce{Fe}\]. How can you justify this reduction with Ellingham diagram?
Advertisements
उत्तर
As per Ellinghan diagram at temperature greater than 1073 K, ∆G° for the formation \[\ce{FeO}\] is less negative than ∆G° for the formation of carbon monoxide from carbon. THus, above 1073 K, carbon can reduce \[\ce{FeO}\], i.e., ∆rG° for the reaction.
\[\ce{FeO + C ->[1073K] Fe + CO is negative}\].
APPEARS IN
संबंधित प्रश्न
Explain calcination with reactions.
What is the process in which concentrated ore is reduced to the corresponding metal by heating at high temperature with a reducing agent?
(a) Polling
(b) Pyrometallurgy
(c) Hydrometallurgy
(d) Calcination
Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver?
Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?
What is the role of zinc metal in the extraction of silver ?
Name the processes from which chlorine is obtained as a by-product.
MnO2 and Ca3(PO4)2 present in iron ore get reduced to Mn and P in the zone of _______.
(A) combustion
(B) reduction
(C) fusion
(D) slag formation
Which one of the following oxidation state of Manganese is unstable?
(a) + 2
(b) + 4
(c) + 5
(d) + 7
What happens when HCl is added to MnO2? Write the equations involved
What is the action of carbon on the following metal oxides:
Fe2O3 in the blast furnace
What is the action of carbon on the following metal oxides :
ZnO in the vertical retort furnace
Account for the following :
Reducing character decreases from SO2 to TeO2.
Which metal is also found in sea beds?
In the extraction of chlorine by electrolysis of brine ______.
