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When dilute aqueous solution of AgNO3 (e...

When dilute aqueous solution of `AgNO_3` (excess) is added to KI solution, positively charged sol of Agl in formed due to adsorption of

A

`NO_(3)^(-)`

B

`O_(2)^(-)`

C

`Ag^(+)`

D

`K^(+)`

Text Solution

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The correct Answer is:
C
If `AgNO_(3)` is added to KI (excess ) than due to adsorption of `I^(-)` ion, negative charged sol if formed onto the precipitated Agl.
`AgI^(-) + I^(-) + to (AgI)I^(-)`
If KI is added to `AgNO_(3)` (excess) then due to adsorption of `Ag^(+)` ion , positive charged sol is formed onto the precipitated AgI.
`AI + Ag^(+) to Ag^(+) (AgI)`
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