Advertisements
Advertisements
Question
Give reason why a finely divided substance is more effective as an adsorbent.
Advertisements
Solution
Adsorption is a surface phenomenon. Therefore, adsorption is directly proportional to the surface area. A finely divided substance has a large surface area. Both physisorption and chemisorption increase with an increase in the surface area. Hence, a finely divided substance behaves as a beneficial adsorbent.
RELATED QUESTIONS
Give reasons for the following observations:
Physisorption decreases with increase in temperature.
Differentiate between adsorbtion and absorption.
What is the effect of temperature on chemisorption ?
Why are powdered substances more effective adsorbents than their crystalline forms?
Write one similarity between Physisorption and Chemisorption
Physisorption is reversible while chemisorption is irreversible. Why ?
Which of the following is true about chemisorption?
Chromatography is based on the principle of ____________.
The extent of adsorption increases with the ____________.
The physical adsorption is due to ____________.
Which of the following is not a favourable condition for physical adsorption?
In physisorption adsorbent does not show specificity for any particular gas because ______.
What is the role of activated charcoal in gas mask used in coal mines?
What is the role of diffusion in heterogenous catalysis?
What is the role of adsorption in heterogenous catalysis?
A plot of 10 g (x/m) versus 10 g p for the adsorption of a gas on the surface of a solid gives a straight line with slope equal to:-
Assertion A : Activated charcoal adsorbs SO2 more efficiently than CH4.
Reason R : Gases with lower critical temperatures are readily adsorbed by activated charcoal.
In light of the above statements, choose the correct answer from the options given below.
