Sentence examples for weak acidities from inspiring English sources

Although the hydrogen exchange analysis illustrated in Figure 4 indicates six residues with exchange rate constants below 10 M−1 s−1, these slow exchange rates predominantly reflect the weak acidities of the solvent-accessible conformers for those amides rather than the rarity of those solvent-exposed states.

Tannic acid has weak acidity due to the phenolic hydroxyl groups in the structure, and can adsorb to TiO2 surface chemically in form of monolayer.

However, it should be noted that while these results indicate that Si dissolved more readily at lower pH values, due to the weak acidity of carbonic acid, the apparent activation energies were all close in value.

The high activity of both catalysts is related to vicinal silanol groups and silanol nests with weak acidity and negligible Brønsted acid sites.

Once dissolved in water, it shows weak acidity but a strongly acid taste which affects sweetness and provides a fruity tartness for which it is widely used to complement fruit flavours in the food and beverage industry.

Tannic acid is a type of polyphenol with weak acidity due to the numerous phenol groups in the structure.

4 However, problems such as low catalytic activity because of weak acidity, complicated preparation, and lack of a continuous range of acidic and basic catalytic sites often significantly limit their application in organic reactions.

As shown in Figure 3, Al-MCM-48 has weak acidity because the peak at approximately 220°C was attributed to NH3 desorption from the weak acid.

It was suggested that basicity and weak acidity are intrinsic features of the clay structure, while medium and strong acidities are induced by the exchangeable cation.

The NH3-TPD profiles indicate that the weak acidity decreases more sharply with increase in Si/Al ratios, compared with the strong acidity.

In addition, hydrogel with the highest and fastest water swelling capacity was obtained at a condition of small grain size (40 60 mesh), low salt concentration (0%), weak acidity condition (pH = 5 6) and low temperature (20 °C).