PLEAAASSSSSEEE HELLLLPPP MEDAL AND FAN
given a thermochemical equation with ΔH equals -10kl/mole, is the reaction endothermic or exothermic ?

Draw the potential energy diagram for this reaction.

Question

PLEAAASSSSSEEE HELLLLPPP MEDAL AND FAN
given a thermochemical equation with ΔH equals -10kl/mole, is the reaction endothermic or exothermic ?

Draw the potential energy diagram for this reaction.

rushwr · Answer

Exothermic reactions occur when the heat is released out of the system to the surrounding. So the enthalpy is negative.
Endothermic reactions occur when the heat is absorbed in to the system from the surrounding so the enthalpy is positive.

anonymous · Answer

so it would be endothermic ? @rushwr

rushwr · Answer

No it would be exothermic because the given enthalpy is negative right ?

anonymous · Answer

it says I have draw a potential energy diagram for the reaction could you help me with that too ?????? @rushwr

rushwr · Answer

In an exothermic reaction the heat in the product side is less than the reactant side that is why the enthalpy is negative. 
So in the diagram the heat of the products should be less than the reactants' heat