The lattice energy of KF is 808 kJ/mol and its heat of solution is -17.7 kJ/mol.Calculate the hydration of energy of KF(s).
A)-35.4 kJ/mol
B)-790.3 kJ/mol
C)-825.7 kJ/mol
D)790.3 kJ/mol
E)825.7 kJ/mol

Question

Quizplus · Accepted Answer

The hydration energy of KF(s) can be calculated using the following equation:

ΔHsol = lattice energy + hydration energy

Where ΔHsol is the heat of solution.

Therefore,

Hydration energy = ΔHsol - lattice energy

Substituting the given values:

Hydration energy = -17.7 kJ/mol - 808 kJ/mol

Hydration energy = -825.7 kJ/mol

Hence, the correct answer is (C).

The Lattice Energy of KF Is 808 KJ/mol and Its