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Hydration energies of $L i^{+}$ and $C l^{-}$ are - 499 and - 382 k.J $m o l e^{- 1}$ .If lattice energy of LiCl is +840 k.J $m o l e^{- 1}$ , heat of solution of $LiCl$ is

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– 41 kJ mole ^-1

– 1621 kJ $m o l e^{- 1}$

+41 kJ $m o l e^{- 1}$

–12.22 kJ $m o l e^{- 1}$

answer is D.

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Detailed Solution

Heat of Solution = Lattice energy + Hydration energy
= + 840 - 499 – 382 = -41kJ mole^-1

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