C-10-Q053mediumsingle_mcqAl2O3⋅2H2O+2NaOH→1500-2000 ∘C?\mathrm{Al_2O_3 \cdot 2H_2O + 2NaOH \xrightarrow{1500\text{-}2000\,^{\circ}C} ?}Al2O3⋅2H2O+2NaOH1500-2000a2NaAlO2+3H2O\mathrm{2NaAlO_2 + 3H_2O}2NaAlO2+3H2Ob