c. When anhydrous salts, which can exist in hydrated form dissolves, its enthalpy of solution is usually negative whereas when hydrated form of the same salt dissolves, its enthalpy of solution is always positive. Explain.
llm
Answered on
Most of the energy given out during the solution process is by the hydration of ions and this often almost balances the energy required to separate the ions. Much of the hydration energy was liberated when the hydrated salt was formed and thus there is less energy given out by the solution of the hydrated form.