Dissociation coefficient

The dissociation coefficient (KJ of the hybrids were determined to be 0.002 and 0.9 pg/ml, for GFP/SBA-15 and GFP/Aerosil , respectively, indicating that the interaction of GFP towards SBA-15 was very strong whereas towards Aerosil extremely weak [5], Concerning the rate of adsorption for the hybrid GFP/SBA-15, the saturation level was very fast and, for an initial concentration of 2.5 pg/ml of GFP in buffer solution, it was attained after 10 min of contacting time (Fig. 3). 

Figure 3.23 Variation of the capacity factor (relative dissociation coefficient, see eqn.3.85) as a function of the pH for some weak acids and bases on strong ion-exchange materials. pKa values refer to different solutes. 

Figure 1.6 Variation of the dissociation coefficient Eq. (1.5) of reaction Eq. (1.3) with temperature along the water saturation curve, as described by a dielectric continuum model. R = 1.987 cal moF here is the gas constant. SeePaddison etal. (2001).

Bell, T. G., Johnson, M. A., JickeUs, T. D., andLiss, P. S. (2007). Ammonia/ammonium dissociation coefficient in seawater A significant numerical correction. Environ. Chem. 4, 183—186. 

The dissociation coefficients K,y of complexes Ri are assumed to be constant and to be independent of the degree of conversion F. 

FIGURE 8. CO2 photoabsorption and photodissociation coefficients CO2 pressure range 0.38 - 4.0 torr. Open circles - measured absorption coefficients. Filled circles - measured dissociation coefficients. coeffi(... 

WMR MeasurementsOn the basis of adsorbed one can calculate the ratio of the concentration of protonated ammonia to the concentration of neutral NH molecules. This allows one to calculate the dissociation coefficient of surface... 

N2 adsorption on Fe catalyst was investigated with molecule beam experiment by Rettner and Stein.They found that the dissociation coefficient So of N2 was about 10 at low incident kinetic energy, up to 10 at 1 eV (1 eV = 1.60 x 10 J) of incident kinetic energy and 0.1 which was the saturation value at 1.5 eV. For Ru, Re etc., similar results were obtained, as shown in Fig. 2.14. 

Fig. 2.14 Relation between the dissociation coefficient of N2 and incident kinetic energy obtained by molecule beam experiments for Fe and Ru...

In the case of ionic solutions, a factor called the Van t Hoff factor, due to the dissociation of the electrolyte, comes into play in the sum of the molar fractions of the solutes. Thus, the situation is complex for weak electrolytes with incomplete dissociation, for which the dissociation coefficient is unknown. In order to resolve this impasse, it is possible to perform measurements using both ebullioscopy and cryometry at once. 

Suppose that we know the dissociation constant of the weak electrolyte AH and its dissociation coefficient a at the chosen concentration c. The dissociation constant is written ... 

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