You are examining forensics data for a court case and need to identify an analgesic (pain killer). It could be either acetylsalicylic acid (aspirin), ibuprofen (advil) or acetaminophen (Tylenol). A mixture of the unknown is prepared by mixing 10.0 g of unknown and dilution to 250. mL with ethanol. The density of this solution is 0.800 g/mL. Identify the unknown based upon the following:
You are examining
analgesic (pain killer). It could be either acetylsalicylic acid (aspirin), ibuprofen (advil)
or acetaminophen (Tylenol). A mixture of the unknown is prepared by mixing 10.0 g
of unknown and dilution to 250. mL with ethanol. The density of this solution is
0.800 g/mL. Identify the unknown based upon the following:
a. The boiling point of this mixture is 78.80C.
b. The osmotic pressure of this mixture is 4.80 x 105 Pa at 25.00C.
Additional data:
acetylsalicylic acid (aspirin) = C9H8O4
ibuprofen (advil) = C13H18O2
acetaminophen (Tylenol) = C8H9NO2
Boiling point of ethanol = 78.50C
Kb of ethanol = 1.22
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