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Unformatted text preview: base having drastically different sizes. 6 and 16) Explained simply by the charge state of the acid. 6 and 12) The acid, 12, is more stable than the acid, 6, because the positive charge character is on a less electronegative atom (nitrogen vs. oxygen). Simply put, basicity decreases across a row of the periodic table (i.e., NH 3 vs. H 2 O). 12 and 18) Same reasoning as 6 and 16. 1 Chem 3A - Table of pKa's 16 and 18) The conjugate base of 16 is more stabilized in relation to the conjugate base of 18, because the negative charge is placed on a more electronegative atom. 14 and 15) The conjugate base of 14 has resonance stabilization, whereas the conjugate base of 15 does not. 13 and 15) The conjugate base of 13 places a negative charge on a larger atom, sulfur, than the conjugate base of 15. 2...
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