Homework Help: Chemistry

Posted by Michelle on Sunday, March 22, 2009 at 5:20pm.

If you mixed water and dilute sulfuric acid, rather than concentrated sulfuric acid, would the exothermic reaction be greater or less than the exothermic reaction that occurs during hydration of a concentrated sulfuric acid? If so, why?

Chemistry - DrBob222, Sunday, March 22, 2009 at 6:25pm
Less if you mix water and dilute H2SO4 because some of the energy has already been emitted. See my later post about the dangers of adding water to conc H2SO4.

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