Question

LiF is almost insoluble in water because
1) Higher hydration enthalpy of Lit
2) Lower lattice enthalpy of LIF
3) Higher lattice enthalpy of LIF
4) Lower Hydration enthalpy of F-
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Answer 1

Answer:

LiF is almost insoluble due to high lattice energy.

Explanation:

If hydration energy is greater as compare to lattice energy then the salt is soluble, and if hydration energy is lesser as compared to lattice energy, then salt is insoluble.In case of CsI both ions are larger in size. As a result, both the ions in CsI are less hydrated therefore, its hydration energy will decrease.

Hence, it is insoluble in water.

Answer 2

Answer:

(3)Higher lattice enthalpy of LiF is the correct answer

Hope this answer is Helpful