In the electrolytic extraction of Al,molten c | vedclass

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(A) In the Hall-Heroult process,pure alumina $(Al_2O_3)$ has a very high melting point $(2323 \ K)$ and is a poor conductor of electricity. Adding mol

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makes the solution of bauxite conducting

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(A) In the Hall-Heroult process,pure alumina $(Al_2O_3)$ has a very high melting point $(2323 \ K)$ and is a poor conductor of electricity. Adding molten cryolite $(Na_3AlF_6)$ serves two main purposes: $1$. It lowers the melting point of the mixture to about $1240 \ K$. $2$. It increases the electrical conductivity of the molten mixture,making the electrolysis process efficient.

In the electrolytic extraction of $Al$,molten cryolite $(Na_3AlF_6)$ is used because it .......

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