Using the data given in Table 10.4, determine which is the stronger acid, acetic or dichloroacetic, and by how much.
Table 10.4 The Ionization Constants of Some Acids

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Name formic acid acetic acid propanoic acid butanoic acid chloroacetic acid dichloroacetic acid trichloroacetic acid Formula HCOOH CH3COOH CH3CH2COOH CHaCH2CH2C00H CICH2COOH Cl2CHCOOH Cl3CCOOH 2.1 x 10-4 1.8 × 10-5 1.4 x 10-5 1.6×10-5 3.68 4.74 4.85 4.80 2.82 1.30 0.70 3 2.85 4.05 4.18 2.90 3.80 4.00 3.40 10.00 16.00 15.74 1.5 × 10-3 5.0 × 10-2 2.0 x 101 2-chlorobutanoic acidCH3CH2CHCICOOH 1.4 x 10- 3-chlorobutanoic acid CH CHCICH2COOH C6H COOH 0-Cl--CgH4COOH m-Cl-C6H COOH p-C-CH COOH benzoic acid o-chlorobenzoic acid m-chlorobenzoic acid p-chlorobenzoic acid p-nitrobenzoic acid phenol ethanol water 8.9 x 10-5 6.6 x 10-5 12.5×10-4 1.6 × 10-4 1.0 x 10-4 p-NO2 CsH COOH 4.0 x 10-4 1.0 x 10-10 1.0 x 10-16 1.8 x 10-16 C6H50H CH3CH20H HOH