Question

what are the ∆H sign conventions for exothermice aid endothosuere reactions
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Answer 1

Answer:

∆H denotes the enthalpy change.

H2-H1 = ∆H

Answer 2

Answer:

For enthothermic reaction, ∆H is +ve

For exothermic reaction, ∆H is -ve

For More Information :

Heat is absorbed during an endothermic reaction

Heat is evolved/liberated during an exothermic reaction.