A sol is made by mixing 50 mL of 0.10 M AgNO3 with 30 mL of 0.10 M KI (Ag = 108, I = 127). Select the correct statements.

The AgI particles are positively charged

The concentration of excess Ag^+ in the mixture is 0.025 M

The AgI particles are positively charged

The concentration of excess Ag^+ in the mixture is 0.025 M

The particles move towards the anode in an electric field

JEE Advanced levelOne or more correct optionsDifficulty 3 of 3sc155

A sol is made by mixing $50 mL$ of $0.10 M$ $AgNO X_{3}$ with $30 mL$ of $0.10 M$ $KI$ (Ag = 108, I = 127). Select the correct statements.

Moles of

Ag X^{+}

= 5.0 mmol and of

I X^{-}

= 3.0 mmol, so

Ag X^{+}

is in excess by 2.0 mmol. Concentration =

2.0/80 = 0.025

M. AgI adsorbs

Ag X^{+}

and becomes positive, so it migrates to the cathode. AgI formed = 3.0 mmol x 235 = 0.705 g.