Chemical Forums
Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: julien08 on May 31, 2021, 03:11:21 PM
-
Hello, i don't know how to explain this:
Use the ionic model for reticular enthalpy (ΔHr) and hydration (ΔHh) to explain which is the strongest base: magnesium hydroxide or barium hydroxide.
-
Reticular and hydration enthalpies can be used to calculate enthalpy of reaction:
Mg(OH)2(s) ---H2O---> Mg2+ (aq) + 2 OH-(aq) + ΔH
But....
Reaction constant depends also on its enthropy, which is unknown.
And - when someone thinks about acid-basic properties, usually it is reffered to liquid (aqueous) not solid compounds.
Determining which (Mg(OH)2 or Ba(OH)2) is stronger base can be very inaccurate !
-
thank you very much