What is the ionization constant of acetic acid (\(CH_3COOH\))?
\(1.74 \times 10^{-5}\)
Acetic acid is a weak acid that ionizes only partially: \(CH_3COOH \rightleftharpoons CH_3COO^- + H^+\).
Its ionization constant is \(K_a = \frac{[CH_3COO^-][H^+]}{[CH_3COOH]}\).
At 298 K, the standard tabulated value of \(K_a\) for acetic acid is \(1.74 \times 10^{-5}\) (\(pK_a \approx 4.76\)), showing it is a weak acid.
Hence, \(1.74 \times 10^{-5}\).
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