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💏intro to chemistry review

Na2SO4

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Na2SO4, also known as sodium sulfate, is an inorganic compound composed of two sodium atoms and one sulfur atom bonded to four oxygen atoms. It is a white, crystalline solid that is widely used in various applications, particularly in the context of the topics: 18.9 Occurrence, Preparation, and Compounds of Oxygen.

5 Must Know Facts For Your Next Test

  1. Na2SO4 is a naturally occurring mineral known as Glauber's salt, which is found in some natural water sources.
  2. It is commonly produced by the reaction between sodium hydroxide (NaOH) and sulfuric acid (H2SO4).
  3. Na2SO4 is used as a food preservative, a laxative, a water softener, and in the production of glass, detergents, and textiles.
  4. The compound is soluble in water and has a wide range of industrial and commercial applications.
  5. Na2SO4 is considered a neutral salt, as it does not significantly affect the pH of a solution when dissolved.

Review Questions

  • Describe the occurrence and preparation of Na2SO4.
    • Na2SO4, or sodium sulfate, is a naturally occurring mineral known as Glauber's salt, which can be found in some natural water sources. It is commonly produced industrially through the reaction between sodium hydroxide (NaOH) and sulfuric acid (H2SO4). The preparation of Na2SO4 involves controlled chemical reactions to synthesize the compound, which can then be used in a variety of applications, such as in the production of glass, detergents, and textiles.
  • Explain the role of Na2SO4 as a compound of oxygen.
    • As a compound of oxygen, Na2SO4 plays an important role in the context of the topic 'Compounds of Oxygen.' The sodium sulfate molecule contains four oxygen atoms, which are covalently bonded to the sulfur atom. This arrangement of atoms gives Na2SO4 its unique chemical properties and allows it to participate in various chemical reactions and processes involving oxygen. The presence of oxygen in the compound contributes to its diverse applications, such as its use as a water softener and in the production of glass and other materials.
  • Analyze the importance of Na2SO4 in the broader context of the topics: 18.9 Occurrence, Preparation, and Compounds of Oxygen.
    • Na2SO4, or sodium sulfate, is a compound that is highly relevant to the topics of '18.9 Occurrence, Preparation, and Compounds of Oxygen.' As a naturally occurring mineral, the occurrence of Na2SO4 is an important aspect of this subject matter. Additionally, the preparation of Na2SO4 through the reaction of sodium hydroxide and sulfuric acid demonstrates the principles of chemical synthesis and the production of inorganic compounds. Finally, as a compound containing oxygen, Na2SO4 is a crucial example of how oxygen can combine with other elements to form diverse chemical substances with a wide range of applications. Understanding the properties and uses of Na2SO4 is essential for comprehending the broader context of these chemistry topics.