Write the chemical equations involved in the leaching of bauxite ore to prepare pure alumina.
Chemical equations involved in the leaching of bauxite ore to prepare pure alumina are as follows-
Al2O3 + 2 NaOH + 3H2O → 2 Na [Al(OH)4]
2Na [Al(OH)4] + CO2 → Al2O3 xH2O + 2 NaHCO3
Al2O3 xH2O Al2O3 + xH2O