The lattice energy of NaI is -686 kJ/mol, and its heat of solution is -7.6 kJ/mol. Calculate the hydration of energy of NaI(s) in kJ/mol.
A) -678
B) +694
C) -694
D) +678
E) +15.2

Question

Quizplus · Accepted Answer

The hydration energy can be calculated using the formula: Hydration energy = Lattice energy + Heat of solution. Substituting the given values: Hydration energy = -686 kJ/mol + (-7.6 kJ/mol) = -694 kJ/mol.

The Lattice Energy of NaI Is -686 KJ/mol, and Its