Αποτελέσματα Αναζήτησης
1 Σεπ 2023 · Chemical indicators create a visible sign (usually, a change in color) during they detect the presence of the threshold concentration of some chemical species like an acid, base, etc. This article shows detailed insight into chemical indicators, discussing their definition, examples, types, and various applications.
15 Ιουλ 2019 · A chemical indicator is a substance that undergoes a distinct observable change when conditions in its solution change. This could be a color change, precipitate formation, bubble formation, temperature change, or other measurable quality.
30 Ιαν 2023 · Indicators are substances whose solutions change color due to changes in pH. These are called acid-base indicators. They are usually weak acids or bases, but their conjugate base or acid forms have different colors due to differences in their absorption spectra.
28 Ιουν 2023 · In chemistry, chemical indicators are substances that undergo a distinct observable change when exposed to certain conditions, often related to the presence of acids or bases. The most common change is a color shift, but olfactory indicators, which respond by altering scent, are also used.
An indicator is a weak acid that ionizes within a known pH range, usually about 2 pH units. We can represent the protonated form of the indicator molecule as \(\ce{HIn}\) and the deprotonated form as \(\ce{In^-}\).
19 Ιουν 2020 · An indicator is a weak acid that ionizes within a known pH range, usually about 2 pH units. We can represent the protonated form of the indicator molecule as \(\ce{HIn}\) and the deprotonated form as \(\ce{In^-}\).
