1
Q
Before the coalescence occur,what comes before?
A
flocculation (aggregation)
2
Q
What is the relationship between the square of the radius of droplet and sedimentation velocity?
A
the the square of the radius of droplet is proportional to sedimentation velocity
(larger droplets will move faster to the top)
3
Q
How to destabilise the charge stabilised colloids?
A
- addition of suitable electrolytes e,g, nacl
2. addition of polymer(formation of bridge)
4
Q
Why addition of electrolyte is used in assisted destabilisation?
A
With increase in the
concentration of electrolyte, the energy barrier progressively decreases and vanishes completely.
