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preface to fifteenth edition

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8.160 SECTION 8<br />

TABLE 8.32<br />

Limiting Equivalent Ionic Conductancesin AqueousSolutions(Continued)<br />

Temperature, C<br />

Ion<br />

0 18 25<br />

Fluoroacetate 44.4<br />

Fluorobenzoate 33<br />

Formate 47 54.6<br />

Fumarate(2) 61.8<br />

Glutarate(2) 52.6<br />

Hydrogenoxalate (1) 40.2<br />

Iodoacetate 40.6<br />

Lactate(1) 38.8<br />

Malate(2) 58.8<br />

Malonate(1) 63.5<br />

3-Methylbutanoate 32.7<br />

Methylsulfonate 48.8<br />

Naphthylacetate 28.4<br />

1,8-Octanedioate(2) 36<br />

Octylsulfonate 29<br />

Oxalate(2) 74.11<br />

Phenylacetate 30.6<br />

m-Phthalate(2) 54.7<br />

o-Phthalate(2) 52.3<br />

Picrate 30.37<br />

Propanoate 35.8<br />

Propylsulfonate 37.1<br />

Salicylate 36<br />

Succinate(2) 58.8<br />

Tartrate(2) 55 59.6<br />

Trichloroacetate 36.6<br />

Trimethylacetate 31.9<br />

TABLE 8.33<br />

Standard Solutions for Calibrating Conductivity Vessels<br />

The valuesof conductivity are corrected for the conductivity of the water used. The cell constant of a<br />

conductivity cell can be obtained from the equation<br />

RR solv<br />

<br />

R solv R<br />

where R is the resistance measured when the cell is filled with a solution of the composition stated in the table<br />

below, and R solv is the resistance when the cell is filled with solvent at the same temperature.<br />

GramsKCl per Kilogram<br />

Solution (in vacuo)<br />

Conductivity in ohm 1 ·cm 1 at<br />

0C 18C 25C<br />

71.135 2 0.065 14 4 0.097 79 0 0.111 28 7<br />

7.419 13 0.007 134 4 0.011 161 2 0.012 849 7<br />

0.745 263* 0.000 773 2 6 0.001 219 9 2 0.001 408 0 8<br />

* Virtually 0.0100 M.<br />

From the data of Jonesand Bradshaw, J. Am. Chem. Soc., 55, 1780 (1933). The original data have been converted from (int.<br />

ohm) 1 cm 1 .

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