Question

The reaction of hydrochloric acid with zinc oxide to form zinc chloride and water is a neutralization reaction. State whether the statement is true or false
A.True
B.False
C.Either
D.Neither

Answer 1

Hint: When acids metal oxides react with acids, salt and water are produced. All metal oxides neutralise an acid so they all are basic in nature. \[Acid + metal\,\,oxide \to salt + water\]
So, when acid and base react, it is called neutralization reaction.
 \[ZnO(s) + 2HCl(aq) \to ZnC{l_2}(aq) + {H_2}O(I)\]

Complete step by step answer:
Neutralization is a reaction in which both acid and a base react quantitatively with each other. In simple words, Neutralization is a chemical process in which an acid reacts with a base to produce salt and water.
In general, salt and water are produced when acids react with metal oxides. All Metal oxides are base, because they neutralise an acid.
 \[Acid + metal\,\,oxide \to salt + water\]
Hydrochloric acid (HCl) is a strong acid and on the other hand, Zinc Oxide (ZnO) shows both acidic as well as basic behaviour. It is an amphoteric oxide. Such metal oxides like Zinc react with both acid as well as base to produce salts and water and this reaction is called Amphoteric reaction.
Therefore, when Hydrochloric Acid reacts with Zinc Oxide, it produces Zinc Chloride which is a salt and water and thus the reaction is called Neutralization.
 \[ZnO + 2HCI \to ZnC{l_2} + \;{H_2}O\]
 \[\left( {Zinc\,Oxide} \right) + \left( {Hydrochloric\,Acid} \right)\; \to \left( {Zinc\,Chloride} \right) + \;\left( {Water} \right)\]

Therefore, the correct answer is Option (A)

Note: Aluminium Oxide \[(A{l_2}{O_3})\], Tin Oxide (SnO) and Lead Oxide (PbO) are some other examples of an amphoteric oxide. The prefix of the word 'amphoteric' is taken from a Greek prefix am phi - which means both. An amphoteric substance is a substance that has the capability to act both as an acid or a base.