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preface to fifteenth edition

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8.62 SECTION 8<br />

TABLE 8.8<br />

pK a Values of Organic Materials in Water at 25C (Continued)<br />

Substance pK 1 pK 2 pK 3 pK 4<br />

2-Naphthalenecarboxylic acid 4.161<br />

1-Naphthol (20C) 9.30<br />

2-Naphthol (20C) 9.57<br />

Naphthoquinone monoxime 8.01<br />

1-Naphthylacetic acid 4.236<br />

2-Naphthylacetic acid 4.256<br />

1-Naphthylamine<br />

3.92(1)<br />

2-Naphthylamine<br />

4.11(1)<br />

1-Naphthylarsonic acid 3.66 8.66<br />

1-Naphthysulfonic acid 0.57<br />

Narceine (15C) 3.5(1) 9.3<br />

Narcotine<br />

6.18(1)<br />

Nicotine 3.15(1) 7.87(0)<br />

Nicotyrine<br />

4.76(1)<br />

Nitrilotriacetic acid (NTA) (20C) 1.65 2.94 10.33<br />

Nitroacetic acid 1.68<br />

2-Nitroaniline<br />

0.28(1)<br />

3-Nitroaniline<br />

2.46(1)<br />

4-Nitroaniline<br />

1.01(1)<br />

2-Nitrobenzene-1,4-dicarboxylic 1.73<br />

acid<br />

3-Nitrobenzene-1,2-dicarboxylic 1.88<br />

acid<br />

4-Nitrobenzene-1,2-dicarboxylic 2.11<br />

acid<br />

2-Nitrobenzoic acid 2.18<br />

3-Nitrobenzoic acid 3.46<br />

4-Nitrobenzoic acid 3.441<br />

trans-2-Nitrocinnamic acid 4.15<br />

trans-3-Nitrocinnamic acid 4.12<br />

trans-4-Nitrocinnamic acid 4.05<br />

Nitroethane 8.57<br />

2-Nitrohydroquinone 7.63 10.06<br />

N-Nitroiminodiacetic acid 2.21 3.33<br />

3-Nitromesi<strong>to</strong>l 8.984<br />

Nitromethane 10.12<br />

1-Nitro-6,7-phenanthroline ( 3.23(1)<br />

0.2)<br />

5-Nitro-1,10-phenanthroline<br />

3.232(1)<br />

6-Nitro-1,10-phenanthroline<br />

3.23(1)<br />

2-Nitrophenol 7.222<br />

3-Nitrophenol 8.360<br />

4-Nitrophenol 7.150<br />

(2-Nitrophenoxy)acetic acid 2.896<br />

(3-Nitrophenoxy)acetic acid 2.951<br />

(4-Nitrophenoxy)acetic acid 2.893<br />

2-Nitrophenylacetic acid 4.00<br />

3-Nitrophenylacetic acid 3.97<br />

4-Nitrophenylacetic acid 3.85<br />

2-Nitrophenylarsonic acid 3.37 8.54<br />

3-Nitrophenylarsonic acid 3.41 7.80<br />

4-Nitrophenylarsonic acid 2.90 7.80<br />

7-(4-Nitrophenylazo)-8-hydroxy-5-<br />

quinolinesulfonic acid<br />

3.14(0) 7.495(1)

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