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Ankur Jain from KENDRIYA VIDYALAYA , asked a question
Subject: Chemistry , asked on 14/11/10

What is hydration energy ?

EXPERT ANSWER

Shukla Paladhi ,Meritnation Expert added an answer
Answered on 15/11/10

Dear Student

 
@Nitin, Your answer is partially correct. The most precise definition of hydration energy is as follows.
 
Hydration enthalpy is defined as the amount of energy released when one mole of gaseous ions combine with water to form hydrated ions.
M+ (g) + aq → M+ (aq) + hydration energy
X- (g) + aq → X- (aq) + hydration energy
This hydration energy plays a very crucial role in determining the ionic mobilities of compounds.
Higher the hydration energy of the ions, greater is the solubility of the compound in water.  Further, the extent of hydration depends upon the size of the ions. Smaller the size of the ion, more highly it is hydrated and hence greater is its hydrated ionic radius and less is its ionic mobility.
 
Hope, this helps.
Cheers!!

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Nitin Gupta , From Birla Senior Secondary School,pilani , added an answer
Answered on 14/11/10

The energy released in the process of hydration is known as hydration energy.

Hydration:-The process of dissolving a species in water is known as hydration.

This is what I know.

Thanks

melakugeb03... , added an answer
Answered on 19/10/11

Hydration energy is an enregy released or absorebed when ions are surrounded by solvent  molecule(water) it"smagnitudedependent on the size of the ion