Ethyl ethanoate (commonly called ethyl acetate), CH3CO2C2H5, is an important solvent used in nail polish remover, lacquers, adhesives, the manufacture of plastics, and even as a food favoring. It is produced from acetic acid and ethanol by the reaction
CH3CO2C2H + C2H5OH ⇌ CH3CO2C2H5 + H2O
At 25°C, Kc = 4.10 for this reaction.
In a reaction mixture, the following equilibrium concentrations were observed:
[CH3CO2H] = 0.377 M,
[H2O] = 0.00818 M, and
[CH3CO2C2H5] = 0.924 M
What was the concentration of CH3CO2H in the mixture?