Which of the following techniques can be used to decrease the stability of an aqueous colloidal dispersion?
A) addition of an electrolyte
B) dilution of the system by addition of water
C) both a and b
D) neither a nor b

Question

Quizplus · Accepted Answer

Addition of an electrolyte can decrease the stability of an aqueous colloidal dispersion by causing the particles to aggregate and settle out of solution. Dilution with water, on the other hand, can increase the stability by reducing particle interactions and increasing the electrostatic repulsion between particles. Therefore, choice C is incorrect because it includes both options.

Which of the Following Techniques Can Be Used to Decrease