The lattice energy of NaOH is less endothermic than the hydration energy is exothermic. When NaOH begins to dissolve in water the temperature...
A) increases
b) decreases
c) is unchanged
D) cannot be determined by the info given

Question

The lattice energy of NaOH is less endothermic than the hydration energy is exothermic. When NaOH begins to dissolve in water the temperature... 
A) increases
b) decreases
c) is unchanged
D) cannot be determined by the info given

nincompoop · Answer

when an energy is required to break the bonds of molecules then that energy must come from somewhere 
so think about the water being the source of energy to break the bonds of NaOH
what will happen to the water?