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May 25, 2015

Homework Help: Chemistry

Posted by A Canadian on Sunday, February 10, 2013 at 11:56pm.

HCl (aq) + NaOH (aq) -> NaCl (aq) + H2O (l)

Will the neutralisation reaction be endothermic or exothermic? Hint: think about the net ionic equation.

So, taking the hint, I got: OH- + H+ -> H2O

Not sure how that helps, and now I'm stuck; how would I figure out if this is endothermic or exothermic?

My teacher was also saying something about turning something reactive, stable. And then that would be an exothermic reaction because... (didn't catch the next part). I don't know if that's relevant or if it helps at all, but yeah.

On a side note and kind of irrelevant to this question (but still chemistry related), my teacher was saying something along the lines of, "higher enthalpy products require more energy; the reaction would be endothermic". I feel like I heard wrong; shouldn't the reaction be exothermic then?? Since more energy was used to make bonds resulting in more energy released..? If I did hear right, could you please explain?

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