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Surface Chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistrySurface Chemistry1 Mark
Question
What is the main cause of charge on a colloidal solution?
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Answer

The charge on the colloidal particles is due to adsorption of common ions of the electrolyte on the surface of the colloidal particles, e.g., $\mathrm{Fe}^3+$ from $\mathrm{FeCl}_3$ on the surface of $\mathrm{Fe}(\mathrm{OH})_3$ particles.

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