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Substances like gum, starch form lyophil...

Substances like gum, starch form lyophilic/lyophobic sols.

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surface tension of lyophilic sols is

Give three differences between lyophilic and lyophobic colloids.

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What is the difference between Lyophilic andLyophobic sols?

Read the given passage and answers following questions : Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion medium. The dispersed phase or dispersion medium may be solid, liquid or even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into colloidal state readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. Answer the following questions : Lyophobic colloids do not pass into which state?

Read the given passage and answers following questions : Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion medium. The dispersed phase or dispersion medium may be solid, liquid or even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into colloidal state readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. Answer the following questions : Which substances have strong interactions with dispersion medium?

Read the given passage and answers following questions : Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion medium. The dispersed phase or dispersion medium may be solid, liquid or even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into colloidal state readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. Answer the following questions : What is the size of colloidal particles ?

Read the given passage and answers following questions : Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion medium. The dispersed phase or dispersion medium may be solid, liquid or even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into colloidal state readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. Answer the following questions : How many types systems are possible depending upon the nature of dispersion medium?

Read the given passage and answers following questions : Thomas Graham in 1861, during his work on diffusion found that certain substances such as gelatin, albumin, glue,etc. Diffused at very low rate and were called colloids. The colloid particles have the size in the range of 1 to 100nm consisting of dispersed phase and dispersion medium. The dispersed phase or dispersion medium may be solid, liquid or even a gas. Depending upon the nature of dispersion medium or dispersed phase, 8 types of systems are possible except for a gas dispersed in another gas because the gases are completely miscible with each other. The substances which have strong interaction with the dispersion medium are called lyophilic colloids while those which do not pass into colloidal state readily are called lyophobic colloids. Lyophobic sols are much less stable and are irreversible. Answer the following questions : Which type of colloids are more stable?

MODERN PUBLICATION-SURFACE CHEMISTRY-EXERCISE
  1. According to Freundlich adsorption isotherm, x/m becomes independent o...

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  2. The size of colloidal particles is less/more than that of true solutio...

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  3. Substances like gum, starch form lyophilic/lyophobic sols.

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  4. The formation of micelles takes place above a particular temperature c...

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  5. What are Multimolecular colloids?

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  6. True or False : Colloidal sols are always heterogeneous.

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  7. What happens when ferric chloride is added to sodium hydroxide solutio...

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  8. Gelatin (gold number 0.005-0.01) has more/less protecting power than a...

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  9. The electronic configuration of an element Z is 2, 8, 8. (f) Name the...

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  10. Name the dispersed phase and dispersion mediumin fog.

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  11. The particles of colloidal solution possess electrical charge which is...

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  12. What is Tyndall effect ? What is the cause of it ?

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  13. Does the adsorption of a gas on the surface of solid increases or decr...

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  14. The cause of Brownian movement is

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  15. Name the enzyme which converts starch into maltose.

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  16. Which has a higher enthalpy of adsorption, physisorption or chemisorpt...

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  17. What is adsorption isobar?

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  18. Fill in the blanks- Bordeaux mixture is used for.

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  19. Write Freundlich adsorption isotherm at intermediate pressure.

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  20. Write Freundlich adsorption isotherm at high pressure.

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