The Hall-Heroult process is represented by wh | vedclass

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

Question

(C) The Hall-Heroult process is the electrolytic reduction of alumina $(Al_2O_3)$ dissolved in molten cryolite $(Na_3AlF_6)$. The overall reaction is:

Vedclass · Accepted Answer

$2Al_2O_3 + 3C \longrightarrow 4Al + 3CO_2$

Vedclass · Answer

(C) The Hall-Heroult process is the electrolytic reduction of alumina $(Al_2O_3)$ dissolved in molten cryolite $(Na_3AlF_6)$. The overall reaction is: $2Al_2O_3 + 3C \longrightarrow 4Al + 3CO_2$. In this process,the reactions occurring are: Dissociation: $2Al_2O_3 \rightleftharpoons 4Al^{3+} + 6O^{2-}$. At Cathode: $4Al^{3+} + 12e^- \longrightarrow 4Al$. At Anode: $6O^{2-} \longrightarrow 3O_2 + 12e^-$. The oxygen gas produced at the anode reacts with the carbon anode: $2C + 3O_2 \longrightarrow 3CO_2$.

The Hall-Heroult process is represented by which of the following reactions?

Similar Questions

When bauxite powder is mixed with coke and reacted with nitrogen at $2075 \ K$, carbon monoxide and $X$ are formed. What is the gas formed when $X$ is reacted with water?

Which one of the following oxides is reduced by water gas to obtain the metal during its extraction?

In the extraction of copper from its sulphide ore,the metal is formed by the reduction of $Cu_2O$ with:

From the Ellingham graphs on carbon,which of the following statements is false?

After partial roasting,the sulphide of copper is reduced by

Vedclass Test Series

Exam Paper Generator

Online Exam Module