AP EAMCET · Chemistry · Surface Chemistry
When a dilute \(\mathrm{AgNO}_3\) solution is mixed with excess of dilute \(\mathrm{KI}\), the colloidal solution formed is
- A \(\mathrm{AgNO}_3 / \mathrm{I}^{-}\)
- B Agl
- C \(\mathrm{Agl} / \mathrm{Ag}^{+}\)
- D \(\mathrm{Agl} / \mathrm{I}^{-}\)
Answer & Solution
Correct Answer
(D) \(\mathrm{Agl} / \mathrm{I}^{-}\)
Step-by-step Solution
Detailed explanation
When dilute aqueous solution of \(\mathrm{AgNO}_3\) is added to dilute solution of \(\mathrm{KI}\) (excess) a negatively charged sol of AgI is formed due to the preferential adsorption of \(\mathrm{I}^{-}\)ions from the dispersion medium.
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