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What is Hydration shell in Biology? PDF | Download eBooks

Learn Hydration shell definition in biology with explanation to study “What is Hydration shell”. Study hydration shell explanation with biology terms to review biology course for online degree programs.

Hydration shell Definition

  • Sphere of water molecules around each dissolved ion is called a hydration shell.

    Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson

Hydration shell Explanation

A solvation shell is the solvent interface of any chemical compound or biomolecule that constitutes the solute. When the solvent is water it is often referred to as a hydration shell or hydration sphere. The number of solvent molecules surrounding each unit of solute is called the hydration number of the solute. A classic example is when water molecules arrange around a metal ion. For example, if the latter were a cation, the electronegative oxygen atom of the water molecule would be attracted electrostatically to the positive charge on the metal ion. The result is a solvation shell of water molecules that surround the ion.

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