Coagualation of Lyophilic Sols

Q. Colloidal solution is prepared by following reaction $AgN{O}_3\left(\text{excess}\right)+KI\to AgI\downarrow +KN{O}_3.$ The most effective electrolyte in the coagulation of this colloidal solution is:

1. $K_4\left[Fe\right(CN{)}_6]$
2. $FeC{l}_3$
3. $MgS{O}_4$
4. $AlB{r}_3$

Q.

Arrange in increasing order of dipole moment.

$NaF,NaCl,NaBr,NaI$

1. 

2. 

3. 

4. 

Q. Quantify the total charge present in 3.5 moles of phosphate ion in Faraday unit.

Q.

Lyophilic sols are

[IIT-JEE, 2005]

1. Irreversible sols

2. Prepared from inorganic compounds

3. Coagulated by adding electrolytes

4. Self-stabilizing

Q.

Among the following electrolytes, which is the most effective coagulating agent for $S{b}_2{S}_3$ solution?

1. $N{a}_{2}S{O}_4$

2. $CaC{l}_2$

3. $A{l}_2(S{O}_4{)}_3$

4. $N{H}_{4}Cl$