Which of the following oxide groups cannot be | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The reduction of metal oxides by carbon depends on the thermodynamic stability of the oxides and the affinity of the metal for oxygen compared to

Vedclass · Accepted Answer

$CaO, K_2O$

Vedclass · Answer

(D) The reduction of metal oxides by carbon depends on the thermodynamic stability of the oxides and the affinity of the metal for oxygen compared to carbon. Metals like $Ca$ and $K$ are highly reactive and form very stable oxides ($CaO$ and $K_2O$). The Gibbs free energy of formation for these oxides is highly negative,making them difficult to reduce using carbon at standard metallurgical temperatures. In contrast,oxides of less reactive metals like $Fe$,$Pb$,$Cu$,and $Sn$ can be reduced by carbon because their oxides are less stable than $CO$ or $CO_2$ at higher temperatures. Therefore,$CaO$ and $K_2O$ cannot be reduced by carbon.

Which of the following oxide groups cannot be reduced by carbon?

Similar Questions

Regarding the basic open-hearth process,which statement is wrong?

In the Goldschmidt thermite process,which substance acts as the reducing agent?

Out of $C$ and $CO$,which is a better reducing agent for $ZnO$?

Predict conditions under which $Al$ might be expected to reduce $MgO$.

Which of the following statements is not correct about the Ellingham diagram?

Vedclass Test Series

Exam Paper Generator

Online Exam Module