Assess this lesson U2 Previous Script Next Experiment> 5. sample. Fajans' method consists of using adsorption indicators, that is, molecules that w...

Assess this lesson U2 Previous Script Next Experiment> 5. sample. Fajans' method consists of using adsorption indicators, that is, molecules that when they react with certain substances, change the coloration of it, choose the alternative that indicates an adsorption indicator. Incorrect answer. A. Sodium chloride is a salt that dissolves in water to form physiological saline, and during titration, the concentration of this salt influences the change in color, but it is not the substance responsible for the color change. B. A is an adsorption indicator that, when it comes into contact with the form a fluorescein ion, causing the color to change from greenish-yellow to indicating the moment before and after the equivalence point. Incorrect answer. Silver nitrate.


A. Sodium chloride is a salt that dissolves in water to form physiological saline, and during titration, the concentration of this salt influences the change in color, but it is not the substance responsible for the color change.
B. A is an adsorption indicator that, when it comes into contact with the form a fluorescein ion, causing the color to change from greenish-yellow to indicating the moment before and after the equivalence point.
C. Silver nitrate is an adsorption indicator that, when it comes into contact with the form a fluorescein ion, causing the color to change from greenish-yellow to indicating the moment before and after the equivalence point.