Question

which of the following reaction shows that the given oxide is amphoteric in nature?
a) 2Zn + O2
27.no
b) ZnO + H2SO4
ZnSO, H,O(1)
c) ZnO + 2NaOH
Na ZnO, +H2O
d) (b) and (c) together​

Answer 1

Answer:

amphotheric oxide are

ZnO

PbO

AlO

Answer 2

Answer:

ZnO+H₂SO₄⇒ZnSO₄+H₂O   and  ZnO+2NaOH⇒Na₂ZnO₂+H₂O reaction shows that the given oxide is amphoteric in nature i.e.option(d).

Explanation:

• Amphoteric oxides have the ability to function as both bases and acids. In general, metallic oxides are basic, whereas non-metallic oxides are acidic. While some metallic or semi-metallic oxides are amphoteric, some non-metallic oxides are neutral.

Now let's see the following reactions:-

ZnO+H₂SO₄⇒ZnSO₄+H₂O           (1)

ZnO+2NaOH⇒Na₂ZnO₂+H₂O     (2)

In reaction (1) ZnO is acting as base and H₂SO₄ as acid and in reaction (2) ZnO is acting as acid and NaOH as the base.

So, the correct answer among the given options is (d) i.e.(b), and (c) together​.

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