Question

Al2O3 + 2NaOH → …… + H2O
(a) Al(OH)3
(b) Na2O
(c) NaAlO2
(d) AlNaO2

Answer 1

Answer:

Fill in the blank Al2O3 + 2NaOH → …… + H2O

1 point

Al(OH)3

Na2O

NaAlO2

AlNaO2

Answer 2

Answer:

Al2O3 + 2NaOH → 2NaAlO2 + H2O

So, the correct answer is option (c) NaAlO2.

Explanation:

• Al2O3 (Alumina) is a lewis acid.
• NaOH (Sodium hydroxide) is a strong base.
• Usually when acid and base reacts with each other they form salt and water.
• So, here when alumina which is lewis acid reacts with sodium hydroxide which is strong base forms salt Sodium aluminium oxide (NaAlO2) and water (H2O).
• It is an acid-base (Neutralization) reaction.

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