Question

Which of the following is useful to verify the charge on colloidal particles?

• A. Electrophoresis
• B. Gold number
• C. Brownian motion
• D. Bredig's Arc experiment

Hint:

In colloidal chemistry, electrophoresis is an important method to measure the zeta potential and verify the charge on colloidal particles.

Answer 1

The Correct Option is A

Understanding the concept of electrophoresis: Electrophoresis is a technique used to study the charge on colloidal particles. When an electric field is applied, colloidal particles move towards the oppositely charged electrode, which helps in determining the nature of the charge (positive or negative) on the colloidal particles.
The other options, such as Gold number, Brownian motion, and Bredig's Arc experiment, are not primarily used for verifying the charge of colloidal particles.
Thus, the correct answer is option (1).