"Well...the reason i ask is we have been given a bonus question for my general chemistry class and i was wondering if anyone in here would be able to help me with the answer to it. This question has the potential of raising our final grade a full letter grade!!!! So i need to answer the question telling what formulas or rules i used to determine the answer...so any help please guys!
Question is as follows....
I filled a glass with 40% ethanol solution and left it open on the lab bench. When I came back next morning to the lab, I found that the ethanol concentration in the glass was still 40%.
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Eric"<----quote
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Eric, a guy on another forum is asking a general chemistry question that was asked of him by his teacher...the correct answer will award him with bonus points for his class grade.....
I was thinking that the room is at a saturation point where no more can be evaporated, so the ethanol solution doesn't leave the glass and remains(relative saturation). I also thought along the lines of the solution consisted of something that evaporated at the same rate so that regardless of the quantity of solution is left the next morning the ratio was still at 40%.....
Any other ideas to help him out with this....????