Question

how to calculate hydration energy .tell me proportianality formula in terms of charge of carion and anion

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Answer 1

For the lattice energy, both cation and anion radii release more potential energy, when they are smaller.It is similar as if a satellite goes to the lower orbit, or an electron in an atom goes to the quantum state with lower energy.For multiatom anions, it is more complicated due their structure and charge distribution.For hydration energy and cations of the similar kind, like alkali metals, smaller the radius, bigger hydration energy, as there is stronger electrostatic fields. It has e.g. direct impact on ion mobility and conductivity.For different kinds of captions, the electrophilic affinity of cations plays role as well.Hydration of anions does not have as big effect as for cations. The anions are often rather big, charge of anions is often delocalized and hydration via water H atoms is less effective.

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Answer 2

Answer:

ammount of energy release when one mole of ion undergo hydration it depends on the size of ion if size of ions increase hydration energy decrease because if due to small size of ion attract more no. of water molecule Li have highest hydration energy