Which of the following salt solutions would c | vedclass

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

Question

(A) When $FeCl_{3}$ is added to $NaOH$ in excess,a negatively charged ferric hydroxide sol $[Fe(OH)_{3} \cdot OH^-]$ is formed.According to the Hardy-

Vedclass · Accepted Answer

$10 \ mL$ of $0.2 \ mol \ dm^{-3} \ AlCl_{3}$

Vedclass · Answer

(A) When $FeCl_{3}$ is added to $NaOH$ in excess,a negatively charged ferric hydroxide sol $[Fe(OH)_{3} \cdot OH^-]$ is formed.According to the Hardy-Schulze rule,the coagulating power of an ion increases with the increase in the magnitude of its charge.For a negatively charged sol,the coagulating power of cations follows the order: $Al^{3+} > Ca^{2+} > Na^+$.Among the given options,$AlCl_{3}$ provides $Al^{3+}$ ions,which have the highest charge and thus the highest coagulating power,leading to the fastest rate of coagulation.

Which of the following salt solutions would coagulate the colloid solution formed when $FeCl_{3}$ is added to $NaOH$ solution,at the fastest rate?

Similar Questions

Which is a natural colloid?

Which of the following can act as protective colloids?

Which of the following statements is not correct for lyophilic sols?

Equal volumes of two $AgI$ sols are mixed together. The first sol is obtained by adding $AgNO_3$ to a slight excess of $KI$,and the second sol is obtained by adding $KI$ to a slight excess of $AgNO_3$. What happens when they are mixed?

An example of a water-in-oil $(W/O)$ type emulsion is ......

Vedclass Test Series

Exam Paper Generator

Online Exam Module