Combined with anionic polymer at pH greater than pKa of polymer; simultaneous addition; improved paper filler and short fiber retentiondoi:US20040171719 A1A starch composition is made by cooking a starch and combining the cooked starch with a polymer, the polymer containing anionic groups or ...
The lower the pKa, the stronger the acid and the greater its ability to donate protons. The pH depends on the concentration of the solution. This is important because it means a weak acid could actually have a lower pH than a diluted strong acid. For example, concentrated vinegar (acetic ...
This can also be explained by the pKa of the ammonium ion as a weak acid, which is 9.2 [47]. At a pH higher than this pKa, the concentration of FA is greater than the concentration of NH4+ ions, which is preferable for ammonia stripping. Increasing the liquid phase pH (generally in...
How do you determine pH from pKa? If you want to get a buffer to its maximum buffering capacity and the current ph of the solution is higher than the pka, would you add acid or base? The dilution of a buffer should not change the pH of the buffer by very much. Explain why not. ...
2019). The pKa values obtained for the sorption sites of Al2O3 and goethite (Fig. 4bc) are inconsistent with any of the above values. Kersten et al. (2014) suggested that the adsorption of MCPA on goethite is controlled by aqueous speciation rather than the PZC of the adsorbent. The ...
Suppose that the concentration of H+ in Solution #1 is 10,000 times greater than in Solution #2. What can you conclude about the difference in pH of these two solutions? Suppose that the concentration of H+ in solution 1 is 10,000 times greater than solution 2. What can you co...
For these types of applications, fluorescein conjugates are less than optimal because they have little sensitivity in the pH range below pH 5.5. The response range can be extended using conjugates of our Oregon Green 488 dye, which has a much lower pKa than fluorescein (4.7 compared w...
highlighted that with the increasing pH of the suspending solution, the absolute value of the zeta potential rises. Moreover, the zeta potential value greater than ±20 mV indicates the dispersion stability of the system21. This suggests that tested (bio)colloid is stable at pH higher than ...
It is caused by the chemistry of calcium ions, especially in contrast to D-block elements, which did not create the aggregates in pH greater than 714,15. The hypothesis of calcium - binding suggests that calcium ions cause cells aggre- gation by binding mostly carboxyl groups present on the...
pKa - The pKa value is the negative base -10 logarithm of the acid dissociation constant (Ka) of a solution. The quantitative behavior of acids and bases in solution can be understood only if their pKa values are known. To learn more about Calculation o