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Delta H is a numerical value that is a good indicator of the reaction being endothermic or exothermic. Another way can be to look at the bonds of a reaction. Overall, breaking a bond is endothermic and forming a bond is exothermic.
805097738 wrote:MingdaH 3B wrote:No, you can touch it.
wait what this a serious response lol
Today in class he did say that if you're using a calorimeter and you touch the outside before and after the experiment you can determine if heat was lost or gained. So yes I think?
Alison Trinh 1E wrote:What does DeltaH represent?
Delta H is the change in enthalpy of the system during a reaction. The delta H can indicate whether the reaction is endothermic or exothermic based on whether delta h is positive or negative. A negative delta H indicates it is exothermic and thermodynamically favorable.
You can also look at the temperature change of the surroundings and use that to conclude whether the reaction is exothermic or endothermic. If a reaction is exothermic, it releases heat into surroundings. If a reaction is endothermic, it absorbs heat from the surroundings.
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