Question

charge of the colloids partical​

Answer 1

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Charge on Colloids-

Colloidal particles always have an electric charge. The nature of this charge is the same on all the particles in a given colloidal solution and maybe either +ve  or –ve.

Positively charged sols-

Haemoglobin

Oxides-TiO2 solution

Hydrated Metal oxides like Al2O3.xH2O , Fe2O3.xH2O

Dyes-methylene blue sols

Negatively charged sols-

Metals- Cu, Ag, Au sols

Metallic sulphides-As2S3, CdS

Acid dye stuffs- Eosin

Sols of starch, gelatin

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