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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 7, Number 3
BKCSDE 7(3)
March 20, 1986

Title	The Pressure Effect on the Activity Coefficient of Sodium Chloride and Bromide Ions
Author	Jong-Gi Jee*, Sun-Haing Lee, Seong Keuck Cha
Keywords
Abstract	A new paraffin salt bridge was developed for the concentration cell in high pressure system. The emf values of the concentration cells were measured to calculate the activity coefficients of the electrolytic ions depending upon the pressure of the system. The activity coefficients of sodium, chloride and bromide ions increase with the temperature of the cell and decreased, nearly half at 2500 bars, 20℃, with the pressure. These results can be explained to be attributed to the volume change of the hydrated ion due to the electrostriction. The volume change decreased with pressure due to an increase in the degree of the hydration.
Page	163 - 166
Full Text	PDF

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