Which of the following techniques can be used to decrease the stability of an aqueous colloidal dispersion?
A) the addition of a solvent that has a great affinity for water
B) the addition of an electrolyte
C) the addition of a solvent that has a great affinity for water and the addition of an electrolyte
D) neither of these

Question

Quizplus · Accepted Answer

The addition of a solvent with a great affinity for water can disrupt the hydration layer around colloidal particles, reducing stability. Similarly, adding an electrolyte can compress the electrical double layer or neutralize the charge on colloidal particles, also decreasing stability. Therefore, both actions can reduce the stability of an aqueous colloidal dispersion.

Which of the Following Techniques Can Be Used to Decrease