Tren 100 tri?u ph?i d?u th?u

Some redox titrations do not require an indicator, due to the intense color of the constituents. For instance, in permanganometry a slight persisting pink color signals the endpoint of the titration because of the color of the excess oxidizing agent potassium permanganate . [31] In iodometry , at sufficiently large concentrations, the disappearance of the deep red-brown triiodide ion can itself be used as an endpoint, though at lower concentrations sensitivity is improved by adding starch indicator , which forms an intensely blue complex with triiodide.

Tren 100 tri?u ph?i d?u th?u

tren 100 tri?u ph?i d?u th?u

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