In Hall's process for the beneficiation of low-grade red bauxite, what is the initial chemical reage — Metallurgy and Isolation of Elements Chemistry Question

💡 Solution & Explanation

In Hall's process, red bauxite is fused with sodium carbonate ($Na_2CO_3$) to form water-soluble sodium aluminate ($NaAlO_2$). Aqueous NaOH is used in Baeyer's process, and Coke/Nitrogen are used in Serpeck's process.