KBr Has a Lattice Energy of -682 KJ/mol and a Hydration

Multiple Choice

KBr has a lattice energy of -682 kJ/mol and a hydration energy of -657 kJ/mol. Using this information, what is the heat of solution, $\Delta$ H_sol, for KBr?Hint: What happens to the crystal lattice when an ionic compound dissolves?

A) -1339 kJ/mol
B) +1339 kJ/mol
C) +25 kJ/mol
D) -657 kJ/mol
E) +657 kJ/mol