Chemistry - Surface Chemistry Question with Solution | TestHub
ChemistrySurface ChemistryColloids and their ClassificationsMedium2 minQB
ChemistryMediummultiple choice
Which of the following methods to prepare sol, the colloidal particles will be negatively charged?
Options:(select one or more)
Answer:
A, B, D
Solution:
(A) AgNO₃ + KI (KI excess) → I⁻ adsorbed → negative sol
(B) Al(OH)₃ + little KOH → OH⁻ adsorbed → negative sol
(C) Al(OH)₃ + little HCl → H⁺ adsorbed → positive sol
(D) Gold sol by Bredig arc method → Au particles adsorb OH⁻ → negative sol
Stream:JEESubject:ChemistryTopic:Surface ChemistrySubtopic:Colloids and their Classifications
⏱ 2mℹ️ Source: QB
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