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JEE Main 2026 Preparation: Question Papers, Solutions, Mock Tests & Strategy Unacademy » JEE Study Material » Chemistry » Sodium Oxide

Sodium Oxide

In this article we will learn about what is sodium oxide,physical properties of sodium oxide,chemical properties of sodium oxide,uses of sodium oxide.

Table of Content
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Sodium oxide, also known as Na2O, is an alkali metal oxide that has the chemical formula Na2.

It is the anhydride form of the chemical compound sodium hydroxide. In the presence of air, sodium burns brightly and emits a bright white light. When it is burned in the presence of oxygen, it burns even more brightly. It decomposes into a white powder known as sodium oxide. Sodium ions in the earth’s crust frequently combine with the oxygen in soil and rocks to form sodium oxide (Na2O), which is one of the most common forms of sodium found on the planet.

Other names for this compound include disodium oxide and disodium monoxide.

SODIUM OXIDE’S CHEMICAL AND PHYSICAL PROPERTIES

Na2O is the chemical formula.

Density in cubic centimeters: 2.27 g/cm3

Molecular Weight/Molar Mass: 61.9789 grams per molecular mass

Temperature at which water boils: 1,950 degrees Celsius

The melting point is 1,132 degrees Celsius.

No odor is present.

Appearance: A solid white color.

Unit with Covalent Bonding: 3

72.95 J/(molK) is the heat capacity.

Acceptor of the Hydrogen Bond:1

Solubility: Reacts with both water and ethanol to form a solution.

SODIUM OXIDE HAS SPECIFIC CHEMICAL PROPERTIES.

As a result of the reaction between sodium oxide and carbon dioxide, sodium carbonate is formed. The chemical formula is shown in the following example.

2Na2O + 3CO2 → 2Na2CO3 is a chemical reaction.

In the presence of sodium oxide, some acids (for example, hydrochloric acid) react to form sodium chloride and water. The chemical equation for this reaction is depicted below.

Water + HCl equals NaCl + H2O.

APPLICATIONS OF SODIUM OXIDE

Aside from that, sodium oxide is used in the production of commercial glasses that contain silicon oxides and various other additives as well.

What is the significance of sodium oxide being a basic element?

Basic because it contains the oxide ion, O2, which is a very strong base with a high tendency to combine with hydrogen ions, making it an excellent base to use in chemical reactions. The reaction of sodium oxide with cold water produces sodium hydroxide solution, which is exothermic in nature.

What is the process for manufacturing sodium oxide?

What is the process for making sodium oxide? The compound sodium oxide can be made by reacting metallic sodium with sodium hydroxide in a reaction vessel. The chemical equation for this reaction is as follows: 2Na + 2NaOH →H2 + 2Na2O

An alternative method for the preparation of sodium oxide is through the reaction of sodium nitrite with the element sodium. This reaction’s balanced chemical equation can be found here.

What is the formula for sodium oxide in chemical terms?

Sodium oxide is an alkali metal oxide with the chemical formula Na2O. It is a compound compound compound. It is the anhydride form of the chemical compound sodium hydroxide. In the presence of air, sodium burns brightly and emits a bright white light.

What happens when sodium oxide and water come into contact?

It is a simple, strongly basic oxide in the form of sodium oxide. Basic because it contains the oxide ion, O2, which is a very strong base with a high tendency to combine with hydrogen ions, making it an excellent base to use in chemical reactions. Water causes a reaction. The reaction of sodium oxide with cold water produces sodium hydroxide solution, which is exothermic in nature.

So, how do they come into play in everyday situations?

When it comes to water or other aqueous solutions, sodium oxide is insoluble. Ceramic structures, clay bowls, light-weight structural components in the aerospace industry, and advanced electronics are all made possible because of its extreme stability. Because of the properties of ionic conductivity, it is also used in the production of fuel cells. Due to the fact that the compounds are basic anhydrides, they react well with acids. NaOH is available in a variety of forms, including pieces, pellets, tablets, sputtering targets, and nanopowder.

The Na2O Molecular Structure

Because the molar mass of Na2O is 61.98g mol–1, the structure of Na2O is somewhat complicated. The oxidation is made up of a single oxygen atom, which forms a couple of ionic bonds with two sodium atoms to form the reaction. The molecule’s structure appears to be similar to that of an antifluorite crystal, and as a result, the Na atoms coordinate four O2 atoms.

Sodium Oxide’s Chemical Properties are as follows:

When Sodium Oxide reacts with water, it produces Sodium Hydroxide as a byproduct. Because of its exothermic properties, this reaction is extremely violent. It is for this reason that it is recommended to keep sodium oxide out of the reach of children and animals. The chemical formula is as follows:

2NaOH is formed by the reaction of Na2O and H2O.

That antifluorite structure is aided in its formation by the presence of the alkali oxide M2O (M = Na, Li, and Rb). Due to this, when CaF2 is compared to the position of cations and anions, it appears that their positions are reversed relative to one another. This occurs as a result of sodium ions forming tetrahedral coordination with four iron oxides and cubical oxides forming a cubical coordination with eight NA (sodium) ions.

CONCLUSION:

It is a simple, strongly basic oxide in the form of sodium oxide. A significant component of its basicity is that it contains the oxide ion O2-, which is an extremely strong base with a high proclivity to combine with hydrogen atoms.

The reaction between sodium oxide and water is exothermic, resulting in the formation of sodium hydroxide solution. The pH of a concentrated solution of sodium oxide in water will be 14 in this case.

Na2O+H2O→2NaOH

Reaction with acids: Because sodium oxide is a strong base, it reacts with acids as well. For example, when it reacts with dilute hydrochloric acid, it produces sodium chloride solution as a byproduct.

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Frequently asked questions

Get answers to the most common queries related to the JEE Examination Preparation.

What is the significance of sodium oxide being a basic element?

Ans. Basic because it contains the oxide ion, O...Read full

What is the process for manufacturing sodium oxide?

Ans. What is the process for making sodium oxide? The compound sodium o...Read full

What is the formula for sodium oxide in chemical terms?

Ans. Sodium oxide is an alkali metal oxide with the chemical formula Na...Read full

Ans. Basic because it contains the oxide ion, O2, which is a very strong base with a high tendency to combine with hydrogen ions, making it an excellent base to use in chemical reactions. The reaction of sodium oxide with cold water produces sodium hydroxide solution, which is exothermic in nature.

Ans. What is the process for making sodium oxide? The compound sodium oxide can be made by reacting metallic sodium with sodium hydroxide in a reaction vessel. The chemical equation for this reaction is as follows: 2Na + 2NaOH →H2 + 2Na2O

An alternative method for the preparation of sodium oxide is through the reaction of sodium nitrite with the element sodium. This reaction’s balanced chemical equation can be found here.

Ans. Sodium oxide is an alkali metal oxide with the chemical formula Na2O. It is a compound compound compound. It is the anhydride form of the chemical compound sodium hydroxide. In the presence of air, sodium burns brightly and emits a bright white light.

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