> Breaking ionic bonds does not make heat...

> But, when hydrogen ions are released those ions 
> hydrate and formation of the hydrated hydrogen 
> ions  results in tremendous heat release.  As sulfuric 
> acid generates vastly more ions when dissolved in 
> water then acetic acid generates when dissolved 
> under the same concentration conditions the 
> amount of hydration heat is vastly more from the sulfuric.

Yes, I apologize for over-simplifying.
The process merely begins with breaking the ionic bonds.
The overall reaction is exothermic,  and this is the reason for caution when
diluting acids with water, but this caution seems misplaced for acetic.

 But all of this stuff will sting like the dickens if you get any in your
eye!

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