An indicator has the reaction HIn(aq) <--> H+(aq) + In-(aq). Explain to me how the indicator can change color when a stong acid is poured into a solution of this indicator??
2007-04-07 06:45:50 · 4 answers · asked by Tracey Lee ♥ 2 in Science & Mathematics ➔ Chemistry
Litmus takes up aluminum ions. When a sample is neutral to alkaline, the aluminum ions are bound to other ions like oxygen or phosphates. The aluminum binds to the anthocyanin/co-pigment complex altering which wavelengths of light are reflected.
2007-04-07 07:06:29 · answer #1 · answered by Anonymous · 0⤊ 0⤋
in many situations has to do with conjugation. So some chemical compounds have a color whilst they're the two conjugated or are an ion. So especially problem-unfastened recommendations would do away with a proton, ensuing in a charged species, that are in many situations colored. Others would style different species the place the fee is delocalized, additionally giving colours at particular pH tiers.
2016-12-15 18:43:45 · answer #2 · answered by claypoole 4 · 0⤊ 0⤋
The structure of the indicator is that of a dye. Depending on the specific molecular structure of each indicator, the dye will change colors based on the pH of the solution.
2007-04-07 06:54:13 · answer #3 · answered by reb1240 7 · 0⤊ 0⤋
when an indicator (dye) gains a proton..there will be a change in the chromophore in the molecule...to simplify...some double bonds would have to "shift" ....some structural and electronic changes would occur...that shifts the wavelength of light absorbed or transmitted by the dye
2007-04-07 13:45:20 · answer #4 · answered by kirin 2 · 0⤊ 0⤋