In the thermite process, iron oxide is reduced to molten iron by aluminium powder because

Question

In the thermite process, iron oxide is reduced to molten iron by aluminium powder because (A) the melting point of iron is low (B) the reaction is highly endothermic (C) large amount of heat is liberated in the formation of Al2O3  (D) aluminium is an amphoteric element

Tardigrade Admin · Accepted Answer

Al has high affinity for oxygen, because Al2O3 is highly stable compound, so Al reduces iron oxide to molten iron due to high Δ H(-ve) value. (Thermite process for reduction of metal generates a lot of heat).

Q. In the thermite process, iron oxide is reduced to molten iron by aluminium powder because

the melting point of iron is low

the reaction is highly endothermic

large amount of heat is liberated in the formation of $A l_{2} O_{3}$

aluminium is an amphoteric element

Al has high affinity for oxygen, because $A l_{2} O_{3}$ is highly stable compound, so Al reduces iron oxide to molten iron due to high $Δ H (- v e)$ value. (Thermite process for reduction of metal generates a lot of heat).