Ethanol is commonly referred to simply as alcohol or spirits, Itis the principal type of alcohol found in alcoholic beverages. Itis a psychoactive drug and one of the oldest recreational drugsused by humans. It can cause alcohol intoxication when consumed insufficient quantity. It is a volatile, flammable, colorless liquidwith the structural formula CH3CH2OH. The density of an aqueoussolution containing 45 weight percent ethanol is 0.92472 g/mL.
a) A person weighing 75 kg takes a swallow of an alcoholicbeverage corresponding to 25 gram of pure ethanol. It is assumedthat the alcohol mixes evenly in person´s water phase, constituting62 % of the person´s weight. Calculate the person´s ethanol massper mille (alkoholpromille in Danish).
b) The vapor pressures of ethanol (C2H5OH) and 1-propanol(C3H7OH) at 35 oC are 100.0 mmHg and 37.6 mmHg, respectively.Assume ideal behaviour and calculate the partial pressures ofethanol and 1-propanol at 35 oC over a solution of ethanol in 1-propanol, in which the mole fraction of ethanol is 0.200.
