Which would completely evaporate first: carbonated liquid or non-carbonated liquid if exposed to a constant high temperature (eg. 60 degrees Celsius)?Whih would completely evaporate first:...

Which would completely evaporate first: carbonated liquid or non-carbonated liquid if exposed to a constant high temperature (eg. 60 degrees Celsius)?

Whih would completely evaporate first: carbonated liquid or non carbonated liquid?  For example; Coca Cola vs. water. Which would evaporate faster? Why?  Justify the response.

 

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bandmanjoe | Middle School Teacher | (Level 2) Senior Educator

Posted on

Well, you sort of have a "loaded" question here.  You are assuming the cabonation is going to make a difference in the evaporation rate.  Have you ever left the cap off a carbonated 2-liter bottle of Coca-Cola for a day or so?  Guess what happens to the carbonation?  It escapes in the form of carbon dioxide gas.  So what is left in the bottle?  Basically, colored sugar water.  So the comparison you are asking about is basically water compared to water at a higher temperature.  Evaporation is the rate at which the liquid molecules gain enough energy from their surroundings to free themselves from the liquid state and go to the gaseous state.  So the increased temperature water will have more energy being supplied to its individual molecules.  My prediction is the water with extra heat will evaporate first, because of the extra heat supplied to it.  But we are basically comparing the same substance under two different conditions.

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