# Do acid base reactions produce heat?

Mar 8, 2016

The simple answer is yes. Why?

#### Explanation:

$\text{Bond breaking is an endothermic process}$; $\text{Bond making is an exothermic process}$.

The generalized acid base reaction is:

H^+ + ""^(-)OH rarr H_2O
else,
H_3O^+ + ""^(-)OH rarr 2H_2O

Both formalisms represent the MAKING of a strong $O - H$ bond. The acid base reaction thus involves the transfer of heat to the surroundings on the basis of the $O - H$ bond.

Note that the next time you do an acid base titration in the lab, you can usually notice the exotherm, as equivalence is reached. Try it.