When a solution of AgNO_3 is added to a solut | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The reaction between $AgNO_3$ and $KI$ is: $AgNO_3 + KI \rightarrow AgI(s) + KNO_3$. For a negatively charged $AgI$ sol,the dispersion medium must

Vedclass · Accepted Answer

$50 \ mL$ of $0.1 \ M \ AgNO_3 + 50 \ mL$ of $0.2 \ M \ KI$

Vedclass · Answer

(B) The reaction between $AgNO_3$ and $KI$ is: $AgNO_3 + KI \rightarrow AgI(s) + KNO_3$. For a negatively charged $AgI$ sol,the dispersion medium must contain an excess of $I^-$ ions,which get adsorbed on the surface of $AgI$ particles. This occurs when $KI$ is in excess. In option $B$,$50 \ mL$ of $0.2 \ M \ KI$ provides $10 \ mmol$ of $KI$,while $50 \ mL$ of $0.1 \ M \ AgNO_3$ provides $5 \ mmol$ of $AgNO_3$. Since $KI$ is in excess,$I^-$ ions are adsorbed on $AgI$ to form a negatively charged sol.

When a solution of $AgNO_3$ is added to a solution of $KI$,a negatively charged sol is formed when they are in which of the following proportions?

Similar Questions

Which of the following will have the highest coagulating power for $As_2S_3$ colloid?

Which of the following anions has the lowest coagulating power for the precipitation of a positive sol?

In the precipitation of soap,which can be used instead of $NaCl$?

Which one of the following is not represented by sols?

The zig-zag motion (erratic motion) of particles in a colloid was observed by:

Vedclass Test Series

Exam Paper Generator

Online Exam Module