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Which of the following is true during ad...

Which of the following is true during adsorption?
a. `DeltaG` , `DeltaH` , and `DeltaS` all are negative.
b. `DeltaG` is negative, but `DeltaH` and `DeltaS` is positive.
c. `DeltaG` and `DeltaH` are negative, but `DeltaS` is positive.
d. `DeltaG` and `DeltaS` are negative, but `DeltaH` is positive.

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The correct Answer is:
Positive, negative
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CENGAGE CHEMISTRY-SURFACE CHEMISTRY-Exercises Fill In The Blanks
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  2. Chromatography is a technique based on………………….. Adsorption of defferen...

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  3. Which of the following is true during adsorption? a. DeltaG , DeltaH...

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  4. A cusrve showing the variation of extent of adsorption with temperatur...

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  5. Chemisorption forms ………………. Molecular layers .

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  6. In auto-catalysis one of the…………….. Of the reaction acts as a catalyst...

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  7. A catalyst promoter……….. The efficiency of a catalyst while a poison……...

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  8. Rough surfaces have more…………. Centres on account of free valencies.

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  9. Intermediate compound formation theory explans…………………. Catalysis.

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  10. Heterogeneous catalysis is successfully explained by………………. Theory.

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  11. Enzymes are highely……………………in action.

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  12. Chemical equilibrium is…………… by a catalyst.

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  13. TEL, tetraethyl lead, acts as antiknocking agent. It acts as……………………… ...

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  14. Finely powered or colloidal catalyst particles having……………..surface………...

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  15. Colloids represent a state of ……………..and not a class od substances.

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

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  17. Smoke is a colloidal system of dispersed in …………. . This system is tem...

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  18. Blood is a ………… charged sol.

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

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  20. Migration of colloidal particles under the influence of electrie field...

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