In the given reaction, Al2O3 + NaOH → ……X…… + H2O ; What is element X?
A. NaAlO2
B. Na3Al
C. Na2O3
D. NaAl2O3
Answer:A
In the given reaction, Al2O3 + NaOH → ……X…… + H2O ; What is element X?
A. NaAlO2 B. Na3Al C. Na2O3 D. NaAl2O3
Explanation: Aluminium oxide is amphoteric in nature, i.e., it reacts with acids as well as bases to form salt and water. Here, aluminium oxide behaves as an acid as it reacts with NaOH, a base and forms sodium aluminate (NaAlO2) and water: