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The lattice energy of solid NaCl is 180 ...

The lattice energy of solid NaCl is 180 kcal/mol. The dissolution of the solid in water in the form of ions is endothermic to the extent of 1 kcal/mol. If the hydration energies of `Na^(+)` and `Cl^(-)` are in the ratio 6 : 5, what is the enthalpy of hydration of `Na^(+)` ion?

A

`-8.5 " kcal mol"^(-1)`

B

`-97.64 " kcal mol"^(-1)`

C

`+82.6" kcal mol"^(-1)`

D

`+100 " kcal mol"^(-1)`

Text Solution

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The correct Answer is:
B
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