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AP EAMCET20227 Jul 2022Evening ShiftChemistrySurface ChemistryActual

The number of positively and negatively charged sols respectively in the following are TiO ₂ , blood, CdS , Cu , Ag , Clay, SiO ₂, Fe ₂ O ₃ .

Options

  1. A5,3
  2. B3,5
  3. C6,2
  4. D4,4

Correct answer

D. 4,4

Step-by-step solution

( ( ) One of the most important properties of colloidal solutions is that colloidal particles possess a definite type of electrical charge. In a particular colloidal solution, all the colloidal particles carry the same type of charge, while the dispersion medium has an equal but opposite charge. Thus, the charge on colloidal particles is balanced by that of the dispersion medium and the colloidal solution as a whole is electrically neutral. Positively charged sols are TiO ₂, CdS , Fe ₂ O ₃, SiO ₂ Negatively charged

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