How do hydration and lattice energies differ?

This is one concept where students are usually confused .I will try to make it simple. Lattice energy is the amount of energy required to break one mole of crystal lattice into its constituent ions. Ionic compounds are crystalline in nature. They are formed between two elements from two different blocks.E.g. read more

If the hydration energy is greater than lattice energy substance will soluble. Lattice energy is the amount of energy which bound the crystal lattice. LiF is insoluble in water because it's lattice energy is higher than hydration energy. read more

Hydration energy is the amount of energy released to break one mole of crystal lattice into its constituent ions in water. The required energy is provided by water hence the lattice energy is called as hydration energy else if any other solvent used then it is solvation energy. Hydration energy can be calculated using Born Haber Cycle. read more

Lattice energy relates to the formation of a lattice whereas hydration energy relates to the destruction of a lattice. The difference between lattice energy and hydration energy is that lattice energy is the amount of energy released when a mole of the lattice is formed from infinitely separated ions whereas hydration energy is the amount of energy released when a lattice is separated into ions by solvation in water. read more