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preface to fifteenth edition

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ELECTROLYTES, EMF, AND CHEMICAL EQUILIBRIUM 8.57<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-Methoxycarbonylaniline<br />

2.23(1)<br />

3-Methoxycarbonylaniline<br />

3.64(1)<br />

4-Methoxycarbonylaniline<br />

2.38(1)<br />

Methoxycarbonylmethylamine 7.66(1)<br />

2-Methoxycarbonylpyridine<br />

2.21(1)<br />

3-Methoxycarbonylpyridine<br />

3.13(1)<br />

4-Methoxycarbonylpyridine<br />

3.26(1)<br />

trans-2-Methoxycinnamic acid 4.462<br />

trans-3-Methoxycinnamic acid 4.376<br />

trans-4-Methoxycinnamic acid 4.539<br />

2-Methoxyethylamine 9.45(+1)<br />

2-Methoxy-4-nitrophenylphosphonic<br />

1.53 6.96<br />

acid<br />

2-Methoxyphenol 9.99<br />

3-Methoxyphenol 9.652<br />

4-Methoxyphenol 10.20<br />

(2-Methoxy)phenoxyacetic acid 3.231<br />

(3-Methoxy)phenoxyacetic acid 3.141<br />

(4-Methoxy)phenoxyacetic acid 3.213<br />

4-Methoxyphenylacetic acid 4.358<br />

(4-Methoxyphenyl)phosphinic acid 2.35<br />

(17C)<br />

(2-Methoxyphenyl)phosphonic acid 2.16 7.77<br />

(4-Methoxyphenyl)phosphonic acid 2.4 7.15<br />

(17C)<br />

3-(2-Methoxyphenyl)propanoic 4.804<br />

acid<br />

3-(3-Methoxyphenyl)propanoic 4.654<br />

acid<br />

3-(4-Methoxyphenyl)propanoic 4.689<br />

acid<br />

3-Methoxyphenylselenic acid 4.65<br />

4-Methoxyphenylselenic acid 5.05<br />

2-Methoxy-4-(2-propenyl)phenol 10.0<br />

2-Methoxypyridine<br />

3.06(1)<br />

3-Methoxypyridine<br />

4.91(1)<br />

4-Methoxypyridine<br />

6.47(1)<br />

4-Methoxy-2-(2-thiazoylazo)phenol<br />

7.83<br />

2-Methylacrylic acid (18C) 4.66<br />

N-Methylalanine 2.22(1) 10.19(0)<br />

O-Methylallothreonine ( 0.1) 1.92(+1) 8.90(0)<br />

Methylamine<br />

10.62(1)<br />

2-(N-Methylamino)benzoic acid 1.93(1) 5.34(0)<br />

3-(N-Methylamino)benzoic acid — 5.10(0)<br />

4-(N-Methylamino)benzoic acid — 5.05<br />

Methylaminodiacetic acid (20C) 2.146 10.088<br />

2-(Methylamino)ethanol<br />

9.88(1)<br />

2-(2-Methylaminoethyl)pyridine 3.58(2) 9.65(1)<br />

(30C)<br />

2-(Methylaminomethyl)6-methylpyridine<br />

3.03(2) 9.15(1)<br />

( 0.5)<br />

2-(Methylaminomethyl)pyridine<br />

(30C)<br />

2.92(2) 8.82(1)

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