hydration enthalpy

Asked by ankit malhotra | 9th Nov, 2013, 12:49: PM

Expert Answer:

  • This is the energy change when 1 mole of a gaseous species dissolves in an infinite volume of water.
  • It is caused by the solvent water molecules bonding to the dissolving species.
  • It is always an exothermic process as bonds are being formed.

            Example: The hydration enthalpy of the sodium ion

            Na+(g) + (aq) Na+(aq) ?H = -405 kJ mol-1


Answered by Vaibhav Chavan | 11th Nov, 2013, 11:23: AM

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