Is AlOH3 a base acid or salt?

Answer 1

Acid

Actually, Al2O3 (s) is amphoteric, which means, depending on the environment, it can act as both a base and acid. We are able to illustrate this with these two reactions:

(I) - Solving Al2O3 (s) in an acid (HCl):

Al2O3 (s) + 6 HCl (aq) → 2 [AlCl3] (s, aq*) + 3 H2O (l)

In this reaction, Al2O3 acts as a base

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(II) - Solving Al2O3 (s) in a base (NaOH):

Al2O3 (s) + 3 NaOH (aq) ---> 2 Al(OH)3 (s) + 3 Na+

Al(OH)3 (s) then reacts with NaOH to form NaAlO2:

Al(OH)3 (s) + NaOH (aq) ---> NaAlO2 (s) + 2 H2O (l)

Thus, we often write:

Al2O3 (s) + 2 NaOH (aq) → 2 [NaAlO2] (s) + H2O (l)

In this reaction, Al2O3 (s) acts as an acid

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*depending on amount of solvent used. Excessive amounts of solvent will solve the formed AlCl3 (s) into 2([Al3+][Cl-]3) (aq

Answer 2

Al2O3 is amphoteric, meaning it has both acidic an basic properties.

However, it is insoluble in water so its affect on pH is negligible.

Answer 3

Aluminium hydroxide is amphoteric. It reacts with both acids and bases, so it is both base and acid.

Answer 4

No, Aluminum oxide is ionic.

Answer 5

It is a hydroxide and therefore a base.

Answer 6

Al(OH)3 is a base (Aluminum hyroxide)

Answer 7

Aluminium hydroxide is a base.

Answer 8

No