What is the Difference Between Dissociation and Solvation?

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Dissociation and solvation are two different processes that occur when substances dissolve in a solvent. Here are the key differences between the two:

Dissociation:

  • Dissociation refers to the breakdown of a compound into smaller particles, such as atoms or ions, which make up the compound.
  • It involves the breakdown of a large substance into smaller pieces due to external factors such as intermolecular interactions, heat, and dissolution.
  • For example, the chemical bonds of maltose are broken down by maltase enzymes, resulting in glucose units, which make up maltose.

Solvation:

  • Solvation refers to the dissolution of a substance in a particular solvent due to the attraction forces between molecules or ions of a substance and the solvent.
  • It involves the dissolution of a substance in a solvent, with the solvent particles surrounding and separating the solute particles in a process called dissolution.
  • The interaction between the solute particles and the solvent molecules is known as solvation.
  • For example, when sodium chloride (NaCl) dissolves in water, it breaks down into sodium ions (Na⁺) and chloride ions (Cl⁻), which become surrounded by a solvation shell of water molecules.

In summary, dissociation is the process by which a compound breaks down into smaller particles, while solvation is the process by which a substance dissolves in a solvent and forms an attraction with the solvent molecules.

Comparative Table: Dissociation vs Solvation

Here is a table comparing the differences between dissociation and solvation:

Property Dissociation Solvation
Definition Dissociation refers to the breakdown of a compound into smaller particles, such as atoms or ions. Solvation refers to the dissolution of a substance in a particular solvent due to the attraction forces between the molecules or ions of the solute and the solvent.
Process Involves the breakdown of a large substance into smaller pieces. Involves the attraction forces between the molecules or ions of a substance and the solvent, causing the solute to dissolve.
Example Maltose breaks down into glucose units due to the action of maltase enzymes. Sodium chloride ionic compound breaks down when dissolved in water.

In summary, dissociation is the process of breaking down a compound into smaller particles, such as atoms or ions, while solvation is the process of dissolving a substance in a solvent due to the attraction forces between the molecules or ions of the solute and the solvent.