Here’s the explanation without any equations:
Positive colloids
- Particles have a positive charge.
- They are stabilized by negative ions around them.
- Example: ferric hydroxide sol, aluminum hydroxide sol.
Negative colloids
- Particles have a negative charge.
- They are stabilized by positive ions around them.
- Example: arsenic sulfide sol, gold sol, silver sol.
Main difference:
Positive colloids carry positive charges, while negative colloids carry negative charges on their particles.