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Which of the following statements is inc...

Which of the following statements is incorrect regarding physisorption?

A

More easily liquefiable gases are adsorbed readily

B

Under high pressure it results into multi molecular layer on adsorbent surface.

C

Enthalpy of adsorption ( A dmin) is low and positive

D

It occurs because of van der Waal's forces.

Text Solution

Verified by Experts

The correct Answer is:
C
Adsorption is an exothermic process, hence `DeltaH` will always be negative
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DISHA PUBLICATION-SURFACE CHEMISTRY-Exercise-2 :Concept Applicator
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  2. Which one of the following is not applicable to the phenomenon of adso...

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  3. Which of the following statements is incorrect regarding physisorption...

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  4. In the titration of Cl^(-)ions in solution with AgNO(3) sodium salt of...

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  5. In an experiment, 200 mL of 0.5M oxalic acid is shaken with 10 g of ac...

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  6. The oxidation of oxalic acid by acidified KMnO4 becomes fast as the re...

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  7. A chemical reaction has catalyst X. Hence X

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  8. On adding AgNO(3) solution into KI solution, a negatively charged coll...

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  9. A sol is prepared by addition of excess of AgNO(3) solution in KI solu...

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  10. The gold numbers of protective colloids A,B,C and D are 0.04, 0.004, 1...

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  11. which of the following statement is not true about the oil - in - wat...

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  12. Select incorrect statement

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  13. for the coagulation of 50 mL of ferric hydroxide sol 10 mL of 0.5 M KC...

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  14. If the dispersed phase is a liquid and the dispersion medium is a soli...

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  15. Coagulation value of the electrolytes AlCl(3) and NaCl for As(2)S(3) s...

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  16. The density of gold is 19 g //cm^(2).Find the volume of 95 g of gold.

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  17. The charge on the colloidal particle is due to preferential adsorption...

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  18. which of the following does not contain a hydrophobic structures.

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  19. A thixotropic gel is characterised by

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  20. which property of colloidal solution is independent of charge on the c...

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