Problem: Identify each process as endothermic or exothermic and indicate the sign of ΔH.(a) an ice cube melting(b) nail polish remover quickly evaporating after it is accidentally spilled on the skin(c) gasoline burning within the cylinder of an automobile engine

FREE Expert Solution

Recall that:

Exothermic reactions: lose energy and involve bonds breaking; ΔH is negative

Endothermic reactions: gain energy and involve bonds forming; ΔH is positive


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Problem Details

Identify each process as endothermic or exothermic and indicate the sign of ΔH.
(a) an ice cube melting
(b) nail polish remover quickly evaporating after it is accidentally spilled on the skin
(c) gasoline burning within the cylinder of an automobile engine

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