The charge on Fe(OH)3 sol is due to

The charge on $Fe (OH)_{3}$ sol is due to

A
Adsorption of hydroxyl ion
B
Adsorption of hydrogen ion
C
Adsorption of ferric acid
D
Adsorption of ferric ion

Solution:

${FeCl}_{3}$ is added to excess hot water, a positively charged sol of ferric hydroxide is formed due to adsorption of ${Fe}^{3 +}$ ions.

$Fe (OH)_{3} / {Fe}^{3 +}$

Positively charged

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