Question

Metal oxide + Acid $\to$ Metal salt
I) $N{{a}_{2}}O+2HCl\to 2NaCl+{{H}_{2}}O$
II) $MgO+{{H}_{2}}S{{O}_{4}}\to $
III) ${{K}_{2}}O+HN{{O}_{3}}\to $

Answer 1

Hint:Metal oxides are defined as oxides of metal which consist of metal as cation and oxide as anion. There are different types of oxides a metal can form: oxides, peroxides and superoxides. Oxides are the compounds in which oxygen atom is bonded with another atom.

Complete step-by-step answer:When metal oxides react with acids, it results in the formation of metal salt and water.
Let us discuss the given options:
*When sodium oxide is reacted with hydrogen chloride, it results in the formation of sodium chloride and water.
Let us see the reaction-
$N{{a}_{2}}O+2HCl\to 2NaCl+{{H}_{2}}O$
*Magnesium oxide is reacted with sulphuric acid, it results in the formation of magnesium sulphate and water. Here, magnesium oxide is a basic oxide which neutralises acid and forms metal salt that is magnesium sulphate.
Let us see the reaction-
$MgO+{{H}_{2}}S{{O}_{4}}\to MgS{{O}_{4}}+{{H}_{2}}O$
*When potassium oxide is reacted with nitric acid, it results in the formation of potassium nitrate and water. Here, potassium oxide is a basic oxide which neutralises the acid and forms metal salt that is potassium nitrate.
Let us see the reaction-
${{K}_{2}}O+2HN{{O}_{3}}\to 2KN{{O}_{3}}+{{H}_{2}}O$

Additional information:
Neutralization reaction is defined as a reaction in which acid reacts with base and results in the formation of salt and water. In this reaction, hydrogen ions combine with hydroxide ions and result in the formation of water.

Note:In this question, we have concluded that when metal oxide reacts with an acid, it results in the formation of metal salt and water. It results in an acid- base reaction where metal oxides are basic in nature. Metal salts are formed when metal replaces the hydrogen of an acid.