Colloid destabilisation

Question 1

Before the coalescence occur,what comes before?

Answer 1

flocculation (aggregation)

Question 2

What is the relationship between the square of the radius of droplet and sedimentation velocity?

Answer 2

the the square of the radius of droplet is proportional to sedimentation velocity
(larger droplets will move faster to the top)

Question 3

How to destabilise the charge stabilised colloids?

Answer 3

1. addition of suitable electrolytes e,g, nacl

2. addition of polymer(formation of bridge)

Question 4

Why addition of electrolyte is used in assisted destabilisation?

Answer 4

With increase in the​

concentration of electrolyte, the energy barrier progressively decreases and vanishes completely.​