Studies on the Temperature Coefficients of Reference Electrodes

Bircher, Louis J.; Howell, Geo. D.

doi:10.1021/ja01412a005

Cited by 4 publications

(3 citation statements)

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“…In figures 2 to 8, the temperatures indicated refer to the air bath. Figures 2 and 3 represent some of the data obtained from the first series of measurements, see table 1. These figures show the <f) I-.J 3.…”

Section: Resultsmentioning

confidence: 95%

“…Their potentials and temperature coefficients have been studied previously by other workers [1,2,3,4,5,6,7,8,9,10,12,13,14). 1 The purpose of this report is to emphasize the errors which may be introduced into pH measurements by temperature changes affecting the potential of calomel half-cells.…”

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confidence: 87%

“…::..T, rather than the temperature coefficient,2 as it is simpler for general use. While temperature coefficients have long been recognized, there has been noticed in 1 Figures in brackets refer to tbe bibliograpby at tbe end of tbis article. I Tbe relationsbip between tbe temperature coefficient and 6E/6 T is given by tbe following :…”

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confidence: 99%

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Temperature and hysteresis errors in calomel half-cells

Wingfield¹,

Acree²

1937

J. RES. NATL. BUR. STAN.

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Saturated and undersaturated KCI-calomel half-cells were subjected to temperature changes between 22.5 and 31.3° C and the difference in electromotive force (emf) between them and saturated calomel half-cells at 25° C was measured. During an 8° C change, maximum differences of 0.5 to 0.9 mv were found between the measured emf values and the equilibrium emf values corresponding to the temperature of the KCl solutions. Potentials within 0.2 to 0.3 mv of the equilibrium value were obtained in 2 to 3 hours after an 8° C change. Calomel half-cells protected with dewar flasks against small fluctuations in room temperature were more stable in potential than the unprotected cells. The saturated half-cell had a tlE/tlT of 0.25 mv/oC and the undersaturated h alf-cell, 3.8 N, gave the value 0.47 mv/o.C One half-cell, saturated at 25° C. without an excess of KCl crystals, was measured and its tlE/tlT was found to be erratic.

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Section: Resultsmentioning

confidence: 95%