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Consider the phase change H2O(l) → H2O(g). This equation describes the phase change from liquid water to steam. Think about the heat flow that is necessary for this change to take place. What do you predict about the process?

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Explanation:

When water has changed state from liquid to vapour state then it means the heat provided by raising the temperature has been absorbed by water molecules.

Therefore, molecules of water has attained high energy and force of attraction between them becomes weak.

Since heat has been absorbed by liquid water so, it is an endothermic process.



We have that the  water change from liquid water to steam,Hence Evaporation is necessary for this change to take place.

Chemical Reaction

Generally the equation for the Phase change  is mathematically given as\

H2O(l) → H2O(g)

We see in this reaction that heat is applied on liquid to convert to a gaseous state,This kind of a process is seen a Evaporation of the the solution

Here water change from liquid water to steam,Hence Evaporation is necessary for this change to take place

For more information on Chemical Reaction visit

https://brainly.com/question/11231920