Question

Identify the amphoteric oxide from the following:
(A) $ A{l_2}{O_3} $
(B) $ S{O_2} $
(C) $ {P_2}{O_5} $
(D) $ CaO $

Answer 1

Hint :To answer this question, we first need to understand what chemical compounds are. A chemical compound is a substance made up of numerous identical molecules bound together by chemical bonds and made up of atoms from different elements. As a result, a molecule made up of only one element's atoms is not a compound.

Complete Step By Step Answer:
Amphoteric oxide - An amphoteric chemical is a molecule or ion that may react as both an acid and a base in chemistry. Depending on which definitions of acids and bases are employed, this can mean different things. The word ‘amphoteric' gets its origin from the Greek prefix amphi-, which means both.
Amphiprotic molecules, for example, are amphoteric species that can donate or take a proton. In Bronsted–Lowry acid–base theory, this is what "amphoteric" signifies. Amino acids and proteins, which contain amine and carboxylic acid groups, as well as self-ionizable substances like water, are examples.
So, we conclude that, Salt and water are formed when amphoteric oxides react with acids and alkalis. It's an oxide that can function as an acid or a base to produce salt and water in a reaction. The oxidation states available to a chemical species determine amphoteric.
Amphoteric oxide is $ A{l_2}{O_3} $ . It functions as a base when combined with HCl to generate the salt $ AlC{l_3} $ . It behaves as an acid when reacted with NaOH to create $ NaAl{O_2} $ .
Ampholytes are amphoteric compounds with both acidic and basic groups.
Amphiprotic molecules are amphoteric entities that donate or take hydrogen ions or proton ions.
So, the final answer is option (1) i.e., $ A{l_2}{O_3} $ .

Note :
Any hydrogen-containing material capable of transferring a proton (hydrogen ion) to another chemical is classified as an acid. A base is a molecule or ion that can take a hydrogen ion from an acid and accept it. Acidic substances are characterized by a sour flavor. An acid is a molecule that can contribute an H+ ion while also remaining energetically favorable after losing that ion. Blue litmus is known to become red when exposed to acids.