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Roy a, Lakshmi N. Roy a, Marcia Lawson a, Kathleen M. The constants were determined from electromotive force measurements made with the cell, PtIH 2 g, 1 atm ]borax in synthetic seawaterlAgCl, Ag. The results are discussed in terms of "total" hydrogen ion scale. Our results are in excellent agreement d: This study demonstrates that the measure- ments made by Dickson a are more reliable than the earlier measurements Buch, ; Lyman, ; Hansson, b and should be used in all future studies of the carbonate system in seawater.
Our contributes to the alkalinity of seawater. This requires reliable dissociation constants for the dissocia- 2.
Materials and methods tion of boric acid in seawater: Quadruplicate analyses These measurements made on the total agreed well within The analytical reagent grade measurements of BuchLyman borax Na2B The product was found to This paper presents measurements of the be The molality of HC1 R.
In order to keep the formal ionic strength constant, 2 mmolal NaC1 0. All dilutions were made using MgCI2 0. The emf data through- was determined gravimetrically by dilution of the out an experimental run never differed on the stock solution obtained from the middle fraction average, by more than 0.
These results of the second distillate of the constant-boiling demonstrate the stability of emf cells. It is important to note that measurements were made at each concentration.
This indicated the correct corrected barometric pressure, aw is the activity extent of hydration in the recrystallized sample of water in synthetic seawaters Millero and of borax Na2BH Buoyancy correc- Leung,and Pw is the vapor pressure of tions were applied to all weighings.
The emf data were obtained using the cell: PtlH2 g, 1 atm lborax in synthetic 3. Results seawatertAgC1; Ag 2 The borax salt in water dissolves according to: The corrected emf data E as a function of temperature and molality of borax 0.
The silver-silver chloride electro- potential for: The expression for the 0. A plot of the right hand side of Eq.
The buffer ratio in Eq. The con- Our values of lnK Fig. In summary our Dickson and Riley, We feel concentration of chloride in the buffer. The pH that our results also demonstrate that the of a 0. The values of pH at other temperatures and should be used in all future studies of the can be estimated from: The pH of 0.
Thermodynamics of boric acid in syntheticseawater form Standard potential of the reaction: The estimation of acid 45 The ionic product of water-- Kw. Determination of the acidity constant of in calibrating potentiometric and spectro- boric acid in synthetic sea water media.
A new set of acidity constants for car- Acknowledgements bonic acid and boric acid in sea water.Emily Dinnerman?s Sean Mannix Mr. Tenenbaum Period 5 3/8/11 Thermodynamics?Chill Out Lab Report Purpose: To measure and record changes in the heat (enthalpy) content of a liquid (water) as a part of the system (ice cube) melts in that system (the water plus the ice cube).
This tables gives a few thermodynamic data. Most values are those given in the NBS technical notes (reference 1) after conversion from the units used within those notes. Most values are those given in the NBS technical notes (reference 1) after conversion from the units used within those notes.
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Heroes and Villains - A little light reading. Here you will find a brief history of technology. Initially inspired by the development of batteries, it covers technology in general and includes some interesting little known, or long forgotten, facts as well as a few myths about the development of technology, the science behind it, the context in which it .