What is revealed in the reaction Ca(OH)2(s) Ca2+(aq) + 2OH-(aq),
H = -16.71?

A. The reaction produces heat.
B. The reaction occurs slowly.
C. Heat is one of the reactants.
D. The reaction is endothermic.

Question

What is revealed in the reaction Ca(OH)2(s)  Ca2+(aq) + 2OH-(aq), 
H = -16.71?

 		A.	The reaction produces heat.
 		B.	The reaction occurs slowly.
 		C.	Heat is one of the reactants.
 		D.	The reaction is endothermic.

photon336 · Answer

Hey I'll gladly help but what do you think the answer is and why?

michele_laino · Answer

hint:
the change of enthalpy of reaction is negative