Question

Which mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]l⁻ sol. ?
(1) 50 mL of 1 M AgNO₃ + 50 mL of 1.5 M KI
(2) 50 mL of 1 M AgNO₃ + 50 mL of 2 M KI
(3) 50 mL of 2 M AgNO₃ + 50 mL of 1.5 M KI
(4) 50 mL of 0.1 M AgNO₃ + 50 mL of 0.1 M KI

Answer 1

Answer:

According to NTA Official Answer Key

the answer will be

(1) 50 mL of 1 M AgNO₃ + 50 mL of 1.5 M KI

(2) 50 mL of 1 M AgNO₃ + 50 mL of 2 M KI

Explanation:

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Answer 2

$\bold{50\ml\,of\,1M\,AgNO_{3}+50mL\,of\,2M\,KI}$

Mixture of the solutions will lead to the formation of negatively charged colloidal [Agl]l⁻ solution.

Step by step explanation:

• Due to the adsorption of common ion ion which is present in the dispersion medium makes a charge on the colloid in the reaction mixture.
• If we observe millimoles of potassium iodide is high in the option (2) than compare to the remaining options so it can be act as a solvent.
• The chemical reaction between the silver nitrate and potassium iodide is as follows.

$\bold{AgNO_{3}+KI\rightarrow AgI+KNO_{3}}$

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