Differbetween
i) Lyophilic Colloids: These are the colloidal solutions in which dispersed particles have strong affinity for dispersion medium. These sols are stable and reversible. Some examples are starch, gum, gelatin sol etc. ii) Lyophobic Colloids: There the dispersed phase has no affinity for the dispersion medium.
- What are Lyophobic colloids give one example?
- Is Gold Sol Lyophilic or Lyophobic?
- What is difference between Lyophilic and lyophobic colloids?
- Is milk a Lyophilic colloid?
- Which is Lyophobic in nature?
- Is starch a lyophobic colloid?
- How are sols classified?
- Why Lyophobic sols are irreversible?
- What Happens When gelatin is mixed with a gold sol?
- What are associated colloids give an example?
- What is lyophobic colloid?
- Is lyophobic colloid more stable than Lyophilic?
What are Lyophobic colloids give one example?
Lyophobic sols are those sols in which the particles of the dispersed phase have little affinity for the particles of the dispersion medium. Example: sols of metal and their sulphides and hydroxides.
Is Gold Sol Lyophilic or Lyophobic?
Gold sol is lyophobic sol, gelatin acts as stabilising agent.
What is difference between Lyophilic and lyophobic colloids?
Lyophobic colloids: Here 'Lyo' means 'solvent' and 'phobic' means 'to hate'.
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Complete step by step answer:
| Lyophilic colloids (liquid loving colloids) | Lyophobic colloids (liquid hating colloids) |
|---|---|
| 2) Dispersion phase has high affinity for dispersion medium. | 2) Dispersion phase has low affinity for dispersion medium. |
Is milk a Lyophilic colloid?
Milk is the colloid in which solid oil globules remain suspended in a water-based liquid system. We can separate the components of the milk, so milk is a lyophilic colloid.
Which is Lyophobic in nature?
Sols of inorganic substances like sulphur are lyophobic.
Is starch a lyophobic colloid?
Gelatin, starch and gum all are examples of lyophilic colloids and sulphur is an example of lyophobic colloids.
How are sols classified?
Sols are classified on the basis of size of solid particles present in it. Explanation: When solid particles that are very small in size are present in a continuous liquid medium then the solution formed is known as sol. For example, blood, cell fluid, milk of magnesia etc are all sols.
Why Lyophobic sols are irreversible?
In Lyophobic sol, weak forces of interaction exist between colloidal particles and liquid. ... Unlike Lyophilic colloids, the precipitations of lyophobic colloids do not regain their original state as coagulated mass cannot be dispersed into colloidal form. This shows that lyophobic sols are also irreversible in nature.
What Happens When gelatin is mixed with a gold sol?
What happens when gelatin is mixed with gold sol? Answer: Gold sol is a solvent repelling sol i.e., a lyophobic sol and unstable in nature. Addition of gelatin stabilises the gold sol because gelatin forms lyophilic sol and act as a protective colloid.
What are associated colloids give an example?
The formation of the micelles occurs above a particular temperature called the Kraft temperature (Tk) and also above a specific concentration called the critical micelle concentration. These colloids can be reverted by diluting it. Examples of some associated colloids are soaps and synthetic detergents.
What is lyophobic colloid?
Lyophobic colloids are liquid hating colloids (Lyo means solvent and phobic means hating). When these colloids are mixed with the suitable liquid, a very weak force of attraction exists between colloidal particles and liquid and system does not pass into colloidal state readily.
Is lyophobic colloid more stable than Lyophilic?
In general, lyophilic sols are more stable than lyophobic sols. The additional stability is due to the presence of an envelop of the solvent (say water) around the colloidal particle. The process is known as hydration. To coagulate a hydrophilic sol, we have to add a dehydrating agent in addition to an electrolyte.
