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What is a Lyophilic solution?

What is a Lyophilic solution?

> Lyophilic solution means ‘liquid-loving’ or ‘solvent attraction’. This means that there is a strong attraction between the dispersed phase and dispersion medium, i.e. dispersion phase has great affinity for the dispersion medium that results in the extensiveness of the colloidal particles.

What is Lyophilic and Lyophobic solution?

If colloids have strong affinity between particles of dispersed phase and dispersion medium, they are called as lyophilic sols. Lyophobic sols are those in which the dispersed phase has no attraction for the dispersion medium or the solvent.

What is Lyophilic solution give example?

The colloidal system in which the particles of the dispersed phase have a strong affinity for the dispersion medium are called lyophilic sols. For example, gum, protein, starch.

What are Lyophilic and Lyophobic solutions with example?

Examples are: Sol of gum, gelatine, starch etc. are lyophilic sols. On the other hand if dispersed phase tends to repel (i.e., dislike or hatred) dispersion medium, the resultant sol is termed as lyophobic sol. Examples are: Sols of metals, metal hydroxides, metal sulphides etc.

What is difference between Lyophobic and Lyophilic?

Lyophobic colloids or lyophobic sols – solvent-hating. When water is a dispersion medium, they are known as hydrophobic….Difference between Lyophilic and Lyophobic Colloids.

Lyophilic Colloids Lyophobic Colloids
Highly solvated, dispersed particles are covered by a layer of dispersion medium Dispersed particles are not solvated

Why is Lyophilic solution reversible?

Answer: Lyophilic : Reversible, because on evaporating the liquid, the residue left will passes into colloidal state on addition of liquid. Lyophobic : Irreversible, because on evaporating the liquid, the residue left cannot be converted into solution on mere addition of liquid.

What is the difference between Lyophilic and Lyophobic?

Lyophilic colloids or lyophilic sols – solvent-loving. In case of water as a dispersion medium, they are known as hydrophilic….Difference between Lyophilic and Lyophobic Colloids.

Lyophilic Colloids Lyophobic Colloids
Stability
Highly stable and do not coagulate easily on adding electrolytes Unstable and can easily be coagulated by electrolytes
Reversibility

What is Lyophobic sol give an example?

State Difference between Lyophilic and Lyophobic Sols.

S. No. Lyophilic Sol Lyophobic Sol
8. When water is taken as solvent, it is called hydrophilic sol. When water is taken as solvent, it is called hydrophobic solvent.
9. Examples – Starch sol, egg albumin sol etc. Examples – Ferric hydroxide sol, aluminium hydroxide sol etc.

What are the important differences between Lyophilic and Lyophobic solution?

Lyophilic colloid Lyophobic colloid
The affinity between disperse phase and dispersion medium is strong. The affinity between disperse phase and dispersion medium is weak.
The viscosity of colloid is higher than that of the dispersion medium. The viscosity of colloid is same as that of the dispersion medium.

Is Lyophilic reversible?

A. They can be reformed by mixing residue (dispersed phase) in dispersion medium even after drying. Once formed, the dispersion medium and the dispersed phase cannot be separated. …

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.

Which has more surface tension Lyophilic or Lyophobic?

These sols have a large affinity for water which decreases their surface tension. This means surface tension of lyophilic sols is less than surface tension of water. So the correct answer is option A that is Lower than that of H2O. Note:Like lyophilic there are lyophobic sols as well.

What kind of solution is a lyophilic Sol?

Eventually, a very stable solution is formed, which is called a lyophilic sol. If the solvent is water, then the lyophilic colloids that favor water are known as hydrophilic colloids.

What is the difference between lyophobic and lyophilic colloids?

Lyophobic colloids are solvent hating colloids. There is no attraction between the colloids and the liquid. Lyophobic colloids are thermodynamically unstable. Therefore, these colloids tend to form aggregates or precipitate when added to a liquid.

Which is an example of a reversible lyophobic Sol?

In lyophilic sols, the dispersed phase particles have great affinity (or love) for the dispersion medium. These sols are reversible. Examples include gum, gelatin, starch, proteins and rubber etc. In lyophobic sols, the dispersed phase particles have no affinity (or love) for the dispersion medium. These sols are irreversible.

How are lyophobic sols protected from electrolytes?

Lyophilic sols are highly solvated and the particles of the dispersed phase are covered by a layer of the dispersion medium. They have the ability to protect lyophobic colloids from electrolytes. They form a protective layer around lyophobic particles.

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