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

Which methods are used for the extraction of $Pb$ and $Sn$ from their respective ores?

The reduction of an oxide by aluminium is called:

The purpose of smelting of an ore is

Copper matte contains . . . . . . .

Extraction of copper by smelting uses silica as an additive to remove

Vedclass Test Series

Exam Paper Generator

Online Exam Module