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The ratio of enthalpy of chemisorption t...

The ratio of enthalpy of chemisorption to enthalpy of
physisorption is

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The enthalpy of chemisorption is ……………….. Than the enthalpy of physisorption.

Enthalpy is

Why heat of chemisorption is more than heat of physisorption?

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Which of the following statements is not true? a. Both physisorption and chemisorption are exothermic. b. Physisorption occurs with increase of free energy. c. Physisorption requires low activation energy but chemisorption requires high activation energy. d. The magnitude of chemisorption increases and that of physisorption decreases with rise in temperature.

Why is the enthalpy of sublimation equal to the sum of enthalpy of fusion and enthalpy of vaporisation ?

Write three distinct features of chemisorptions which are not found in physisorptions.

Write three distinctive features of chemisorption which are not found in physisorption.

The enthalpy of combustion of dimond and enthalpy of formation of carbon dioxide has the same value.

Define enthalpy of reaction.

CENGAGE CHEMISTRY ENGLISH-SURFACE CHEMISTRY-Exercises Fill In The Blanks
  1. Colloids represent a state of ……………..and not a class of substances.

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  2. Colloids consist of……….phase, viz, ………….and …………………. .

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  3. Smoke is a colloidal system of .........dispersed in …………. . This syst...

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  4. Blood is a ………… charged sol.

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  5. The sky looks blue due to ………… effect.

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  6. Movement of colloidal particles under the influence of electric field ...

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  7. According to Hardy Schulze rule, the power of coagulation of an ion de...

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  8. The emulsoid which is added to suspensoid to prevent flocculation is c...

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  9. The ability of the protective colloid is measured in terms of……………….

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  10. The process of removing dissolved substance from a colloidal solution ...

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  11. The dispersion medium in aerosol is…………….

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  12. The phenomenon of scattering of light by colloidal particle is called…...

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  13. Bleeding is stopped by the application of ferric chloride. This is due...

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  14. Gold number is minimum in case of……………

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  15. The phenomenon of converting colloidal solution into suspension is kno...

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  16. Colloidal system shows extensive adsorption due to large …………….

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  17. A metal is in the form of dispersed phase and water is the dispersion ...

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  18. The zig-zag motion of colloidal particle is called……………..

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  19. The liquid-liquid colloidal dispersions are called……………..

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  20. The ratio of enthalpy of chemisorption to enthalpy of physisorption ...

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