Question

The following questions are relevant to the extraction of Aluminium:
Along with cryolite and alumina, another substance is added to the electrolyte mixture. Name the substance and give one reason for the addition?

Answer 1

Other than these fluorspar is also added. It reduces the fusion temperature from ${2050}^{\circ }C$ to ${950}^{\circ }C$. It enhances the mobility by acting as the solvent and also increases the electrical conductivity.