The crystal lattice energy for Ca(OH)2(s) is 2637 kJ/mol at 25\deg C. The total hydration energy for both ions is -2499 kJ/mol.
What is the Enthalpy of solution of Ca(OH)2(s) at 25\deg C (for infinite dilution)?
If the hydration energy for hydroxide ion is -460.0 kJ/mol, what is the hydration energy for calcium ion?