Problem: Consider the vaporization of liquid water to steam at a pressure of 1 atm.Is this process endothermic or exothermic?

FREE Expert Solution

We’re being asked to classify vaporization as exothermic or endothermic


Recall that:

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

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


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Problem Details

Consider the vaporization of liquid water to steam at a pressure of 1 atm.

Is this process endothermic or exothermic?

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