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Exothermic and endothermic

Posted: Wed Jan 23, 2019 1:20 pm
by Madelyn Cearlock
What is the difference between an endothermic reaction and an exothermic reaction?

Re: Exothermic and endothermic

Posted: Wed Jan 23, 2019 1:22 pm
by dgerges 4H
an exothermic reaction gives off energy as heat for ex. and has a low activation energy, an endothermic reaction requires more energy and will take it from the surroundings

Re: Exothermic and endothermic

Posted: Wed Jan 23, 2019 2:56 pm
by Faith Fredlund 1H
Exothermic reactions give off heat into the surrounding area.
They will result in a -ΔH.
Endothermic reactions absorb heat from the surrounding area.
They will result in a +ΔH

ΔH = Hp° - Hr°
(change in enthalpy) = (enthalpy of products) - (enthalpy of reactants)

Re: Exothermic and endothermic

Posted: Wed Jan 23, 2019 5:49 pm
by Laura Gong 3H
In addition to what was said above, exothermic reactions tend to make the surroundings warm as it gives off heat, while endothermic reactions tend to make the surrounds cool as it absorbs heat.