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According to the adsorption theory of ca...

According to the adsorption theory of catalysis, the speed of the reaction increases because

A

the concentration of reactant molecules at the acive centres of the catalyst becomes high due to adsorption

B

in the process of adsorption, the activation energy of the molecules becomes large

C

adsorption produces heat which increases the speed of reaction

D

adsorption lowers the activation energy of the reaction.

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According to the adsoption theory of catalysis ,the speed of the reaction increases because:

Adsorption is a surface phenomenon and it differs feom adsorption which occurs throughout the body of the substance which absorbs. In physisorption, the attractive forces are mainly van der Waals' forces while in chemisorption actual bonding occurs between the particles of adsorbent and adsorbente. Generally, easily liquefying gases are adsorbed more easily on the surface of a solid as compared to teh gases whihc are liquefied with difficult. Adsorption increases with the increases in pressure and decreases as the temperature is increases. According to adsorption theory of catalysis, the speed of the reaction increases because

Substances which alter the velocity of a reaction by mere presence, without undergoing any change in mass and compossition are termed catalyst and the phenomenon is known as catalysis According to the adsorption theroy of catalysis, the rate of reaction increases because

DINESH PUBLICATION-SURFACE CHEMISTRY -MULTIPLE CHOICE QUESTION BANK (MCQB)
  1. Action of shape selective catayst depends upon :

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  2. Which of the following in not correct regarding the absorption of a ga...

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  3. According to the adsorption theory of catalysis, the speed of the reac...

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  4. Bredig's Arc Methof cannot be used to prepare colloidal solution of :

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  5. A plot of log (x/m) versus log p for the adsorption of a gas on the su...

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  6. The coagulationof 200 mL of a positive sol took place when 0.73 g HCl ...

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  7. the Langmuir adsorption isotherm is deduced using the assumption.

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  8. In colloidal particles, the range of diameter is :

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  9. Which of the following statements are correct with respect to adsorpt...

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  10. Adsorption is accompanied by

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  11. The formation of micelles takes place only above

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  12. Collodion is a 4% solituon of which one of the following in alcohol-en...

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  13. If x is the amount of adsorbate and m is the amount of adsorbent, whic...

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  14. In freundlich adsorption isotherm, the value of 1/n is :

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  15. Whch one of the following statement is incorrect about enzyme catalyis...

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  16. Identify the positively charged sol

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  17. Protective sols are:

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  18. Which property of the coloidal solution is independent of the charge o...

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  19. Which of the following statements is incorret about physisorption?

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  20. As the size of the gold particle increases, the colour of the solution...

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