Which mixture of the solution will lead to the formation of negatively charged colloidal sol. ?Option 1)50 mL of 1 M + 50 mL of 1.5 M Option 2)50 mL of 1 M + 50 mL of 2 M Option 3)50 mL of 2 M + 50 mL of 1.5 M Option 4)50 mL of 0.1 M + 50 mL of 0.1 M

I need help with - Surface Chemistry

Which mixture of the solution will lead to the formation of negatively charged colloidal $[AgI]I^-$ sol. ?

Option 1)
50 mL of 1 M $AgNO_3$ + 50 mL of 1.5 M $KI$
Option 2)
50 mL of 1 M $AgNO_3$ + 50 mL of 2 M $KI$
Option 3)
50 mL of 2 M $AgNO_3$ + 50 mL of 1.5 M $KI$
Option 4)
50 mL of 0.1 M $AgNO_3$ + 50 mL of 0.1 M $KI$

Answers (1)

P Plabita

Option 2

$AgNO_3 + KI \longrightarrow AgI + KNO_3$

$AgI + KI \longrightarrow [AgI]I^- + K^+$

Negatively charged colloidal

$1 M \;AgNO_3 + 2 M \;KI \longrightarrow 1 M\;[AgI]I^- + KNO_3+ K^+$

$\Rightarrow$ need 2 mol of $I^\circleddash$

Option 1)

50 mL of 1 M $AgNO_3$ + 50 mL of 1.5 M $KI$

Option 2)
50 mL of 1 M $AgNO_3$ + 50 mL of 2 M $KI$
Option 3)

50 mL of 2 M $AgNO_3$ + 50 mL of 1.5 M $KI$

Option 4)

50 mL of 0.1 M $AgNO_3$ + 50 mL of 0.1 M $KI$

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Which mixture of the solution will lead to the formation of negatively charged colloidal sol. ?Option 1)50 mL of 1 M + 50 mL of 1.5 M Option 2)50 mL of 1 M + 50 mL of 2 M Option 3)50 mL of 2 M + 50 mL of 1.5 M Option 4)50 mL of 0.1 M + 50 mL of 0.1 M

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