enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Hydration number - Wikipedia

    en.wikipedia.org/wiki/Hydration_number

    The hydration number of a compound is defined as the number of molecules of water bonded to a central ion, often a metal cation. The hydration number is related to the broader concept of solvation number , the number of solvent molecules bonded to a central atom.

  3. Solvation shell - Wikipedia

    en.wikipedia.org/wiki/Solvation_shell

    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. If the metal ion is a cation, the electronegative oxygen atom of the water molecule would be attracted electrostatically to the positive charge on the metal ion.

  4. Hydrate - Wikipedia

    en.wikipedia.org/wiki/Hydrate

    In organic chemistry, a hydrate is a compound formed by the hydration, i.e. "Addition of water or of the elements of water (i.e. H and OH) to a molecular entity". [5] For example: ethanol , CH 3 −CH 2 −OH , is the product of the hydration reaction of ethene , CH 2 =CH 2 , formed by the addition of H to one C and OH to the other C, and so ...

  5. Hydration energy - Wikipedia

    en.wikipedia.org/wiki/Hydration_energy

    In chemistry, hydration energy (also hydration enthalpy) is the amount of energy released when one mole of ions undergoes solvation. Hydration energy is one component in the quantitative analysis of solvation. It is a particular special case of water. [1] The value of hydration energies is one of the most challenging aspects of structural ...

  6. Hydration reaction - Wikipedia

    en.wikipedia.org/wiki/Hydration_reaction

    In chemistry, a hydration reaction is a chemical reaction in which a substance combines with water. In organic chemistry, water is added to an unsaturated substrate, which is usually an alkene or an alkyne. This type of reaction is employed industrially to produce ethanol, isopropanol, and butan-2-ol. [1]

  7. Water of crystallization - Wikipedia

    en.wikipedia.org/wiki/Water_of_crystallization

    In chemistry, water(s) of crystallization or water(s) of hydration are water molecules that are present inside crystals. Water is often incorporated in the formation of crystals from aqueous solutions . [ 1 ]

  8. Mineral hydration - Wikipedia

    en.wikipedia.org/wiki/Mineral_hydration

    In inorganic chemistry, mineral hydration is a reaction which adds water to the crystal structure of a mineral, usually creating a new mineral, commonly called a hydrate. In geological terms, the process of mineral hydration is known as retrograde alteration and is a process occurring in retrograde metamorphism .

  9. Metal aquo complex - Wikipedia

    en.wikipedia.org/wiki/Metal_aquo_complex

    In chemistry, metal aquo complexes are coordination compounds containing metal ions with only water as a ligand. These complexes are the predominant species in aqueous solutions of many metal salts, such as metal nitrates, sulfates, and perchlorates. They have the general stoichiometry [M(H 2 O) n] z+.