Hydration energies of Li+ and Cl− are -499 and -382 k.J mole−1. If lattice energy of LiCl is +840 k.J mole−1, heat of solution of LiCl is

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+41 kJ mole−1

-12.22 kJ mole-1

– 1621 kJ mole−1

– 41 kJ mole−1

answer is D.

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Detailed Solution

ΔHLiClSol=ΔHLiClHydration+Latticeenergy=−499+(−382)+840=−41kJ/mol

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