Question

Select the most acidic oxide among the following.
SO2, CaO, Al2O3, BaO, NO2​

Answer 1

Explanation:

the most acidic oxide among these is Al2O3

Answer 2

Answer:

Explanation:

What is acidic oxide?

When non-metals and oxygen combine, they produce acidic oxide compounds that are bound together by covalent bonds. These substances may also be referred to as acid anhydrides.

The nature of $SO_{2}$ is acidic. Since they all react with water to produce corresponding acids, non-metallic oxides are all acidic in nature. Sulfur is a non-metal, and when its oxide, $SO_{2}$, reacts with water, sulphurous acid $(H_{2}SO_{3})$ is created.

A metal oxide is calcium oxide $(CaO)$. It dissolves in water to generate calcium hydroxide, making it a basic oxide like other metal oxides.

Acidic oxides are those that combine with water to create Bronsted Acid solutions. $BaO$ is a fundamental oxide because it causes the formation of ions known as $(OH)$ ions.

As an acidic gas, nitrogen dioxide creates an acidic solution in water (mixture of acids). If not, we can state that $NO_{2}$ is one of the most powerfully acidic gases in chemistry.

While $Al_{2} O_{3}$, a metallic oxide of the p block, has a comparably more acidic nature, these metallic oxides are strong bases. As a result, it is the most acidic oxide.

The correct option is $Al_{2} O_{3}$ .

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