\(\text{Al}_2\text{O}_3\ +\ \text{NaOH}\ +\ \text{H}_2\text{O} \rightarrow\)
\(\text{NaAl(OH)}_4\ \text{(aq)}\)
Aluminium oxide (an amphoteric oxide) reacts with NaOH and water to form sodium aluminate (sodium tetrahydroxyaluminate).
Balanced: Al₂O₃ + 2NaOH + 3H₂O → 2NaAl(OH)₄ (aq).
The product forms in aqueous solution since the reaction occurs in water.
Hence, \(\text{NaAl(OH)}_4\ \text{(aq)}\).
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