Question

Which of the following oxides will dissolve in \[{H_2}S{O_4}\]?
A.\[{B_2}{O_3}\]
B.\[A{l_2}{O_3}\]
C.\[C{O_2}\]
D.\[Si{O_2}\]

Answer 1

Hint: We must have to know that the oxide is a chemical compound having at least one oxygen atom present in the compound with one another element. And it is a binary compound. The element present in the oxide compound is electropositive. And the oxide is the dianion of oxygen having formula, \[{O^{2 - }}\]. The oxygen anion is present in metal oxides with the oxidation state of oxygen is \[ - 2\].

Complete answer:
We must have to know that the boric oxide does not dissolve in sulphuric acid. And the boric acid is reacting with sulphuric acid and there is a formation of boron sulphate. Hence, option (A) is incorrect.
The aluminium oxide is amphoteric in nature and it is dissolved in sulphuric acid. And it is only reacted with strong solvents. But it is not soluble in water and it partially dissolves in ethanol. Here, the oxide ions of \[A{l_2}{O_3}\] is strongly held in the case of solid. Hence, option (B) is correct.
The carbon oxide is only soluble in water and it does not soluble in sulphuric acid. Hence, option (C) is incorrect.
The silicon oxide is an example of acid oxide. Thus, it is only soluble in alkaline solutions. Because, under normal conditions, acid and acid do not react. Hence, the option (D) is incorrect.

Note:
We must need to know that the oxides are in different types and that is, acidic oxide, basic oxides, amphoteric oxides, dioxides, peroxides, neutral oxides etc. The metal oxides consist of oxygen. And the metal oxides have unique properties like exceptional carrier motilities, tolerance of stress etc. And the metal oxides are basic in nature and non- metallic oxides are acidic in nature. The oxides are mainly used as thermal conductors, electrical insulators etc.