
Determine the enthalpy of solution of MgCl2(s) in units of kJ/mol. The link provides the data needed.
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The dissolution reaction of MgCl2 (s) can be written as
=> MgCl2 (s) ----------> Mg2+ (aq) + 2 Cl- (aq)
The enthalpy of any solution is given by
=> ΔHsol = ΔHlat + ΔHhydr of all ions
where ΔHsol = Enthalpy of solution
ΔHlat = Lattice energy of compound
And ΔHhydr of all ions = enthalpy of hydration of all ions
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