?In the vapor phase, acetic acid molecules associate to a certain extent to form
Chapter 15, Problem 125P(choose chapter or problem)
In the vapor phase, acetic acid molecules associate to a certain extent to form dimers:
\(2 \mathrm{CH}_{3} \mathrm{COOH}(g) \rightleftharpoons\left(\mathrm{CH}_{3} \mathrm{COOH}\right)_{2}(g)\)
At \(51^{\circ} \mathrm{C}\) the pressure of a certain acetic acid vapor system is 0.0342 atm in a 360-mL flask. The vapor is condensed and neutralized with 13.8 mL of 0.0568 M NaOH.
(a) Calculate the degree of dissociation \((\alpha)\) of the dimer under these conditions:
\(\left(\mathrm{CH}_{3} \mathrm{COOH}\right)_{2} \rightleftharpoons 2 \mathrm{CH}_{3} \mathrm{COOH}\)
(Hint: See Problem 14.117 for general procedure.)
(b) Calculate the equilibrium constant \(K_{P}\) for the reaction in (a).
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