The lower thepH, the higher the concentration of hydrogen ions [H+]. 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 p...
whereas other tumor cells contain lysosomes with higher pH. The fluorescent pH indicators used to detect acidic organelles and to follow trafficking through acidic organelles must have a lower pKathan those described inProbes Useful at Near-Neutral pH—Section 20.2. Also, unlik...
If there is more acid, the log of a fraction is negative, so the pH will be smaller than the pKa, and if there is more base, the log is positive, leading to a higher pH than the pKa. To get practice using the buffer solution equation, the {eq}HF/F^- {/eq} buffer solution ...
That’s to say, the higher the value of Ka, the more free protons there are in the solution. This, by definition, means the larger the value of Ka, the stronger acid we are dealing with. Remember—stronger acids have larger Ka values than weaker acids. ...
The solution is acidic if its pH is less than 7. If the pH is higher, the solution is basic (also referred to as alkaline). Solutions with a pH that is equal to 7 are neutral. Apart from the mathematical way of determining pH, you can also use pH indicators. The most universally ...
In chemical fertilization, EDTA salts are used as “chelators”. The purpose is to form a more stable species in solution by using bidentate bonds. This means that the metal ion (such as Mg2+) will have two bonds for each EDTA molecule attached. This entropy of formation is higher for ...
higher than the pKa of the source of peracid,and wherein upon dilution in de-ionized water to a concentration of 1 g/L at 20掳 C., the composition forms a wash liquor, wherein the equilibrium pH of the wash liquor is at least 0.5 pH units lower than the pKa of the source of ...
For example, lysosomes in some tumor cells have been reported to have a lower pH than normal lysosomes, whereas other tumor cells contain lysosomes with higher pH. The fluorescent pH indicators used to detect acidic organelles and to follow trafficking through acidic organelles m...
whereas other tumor cells contain lysosomes with higher pH. The fluorescent pH indicators used to detect acidic organelles and to follow trafficking through acidic organelles must have a lower pKathan those described inProbes Useful at Near-Neutral pH—Section 20.2. Also, unlike mos...
On the contrary, when the ambient pH is higher than the value of pKa(PMAA), the grafted PMAA brushes swell and the resistance for trans-membrane mass-transfer is low; consequently, the enzymatic reaction in the capsule is in the active state due to the high permeability of substrates and ...