Which of the following statements is incorrec | vedclass

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

Question

(C) In the Hall-Heroult process,$Al_2O_3$ is dissolved in molten cryolite $(Na_3AlF_6)$ to lower its melting point and increase electrical conductivit

Vedclass · Accepted Answer

$Li_2CO_3$ can be used in place of cryolite $(Na_3AlF_6)$.

Vedclass · Answer

(C) In the Hall-Heroult process,$Al_2O_3$ is dissolved in molten cryolite $(Na_3AlF_6)$ to lower its melting point and increase electrical conductivity. $Al$ is deposited at the cathode,and $CO_2$ is released at the carbon anode. $CaF_2$ (fluorspar) is added to lower the melting point further and improve fluidity. $Li_2CO_3$ cannot be used as a substitute for cryolite because it does not provide the necessary electrolyte properties for the process. Therefore,option $C$ is the incorrect statement.

Which of the following statements is incorrect regarding the electrolysis of $Al_2O_3$ by the Hall-Heroult process?

Similar Questions

Aluminium is extracted from alumina $(Al_2O_3)$ by electrolysis of a molten mixture of

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

Among the following groups of oxides,the group containing oxides that cannot be reduced by carbon to give the respective metals is

The Ellingham diagram for zinc,magnesium,and carbon converting into corresponding oxides is shown below. At $1100 \, ^oC$,which reaction is spontaneous to a maximum extent?

The function of fluorspar in the electrolytic reduction of alumina dissolved in fused cryolite $(Na_3AlF_6)$ is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module