Chemisorption
Chemisorption
A
involves the weak attractive interactions between adsorbent and adsorbate
B
is irreversible in nature
C
decreases with increase of temperature
D
involves multilayer formation of adsorbent on adsorbate
Text Solution
Verified by Experts
The correct Answer is:
B
Similar Questions
Explore conceptually related problems
Column - I and Column - II contains four emtries each. Entries of Column -I are to be matched with some entries of Column - II . One or more than one entries of Column -I may have the matching with the same entries of Column - II. {:("column-I","column-II"),("(A) Chemisorption","(P) Not specific and decreases with temperature "),("(B) physisorption",(Q) "sepecific and increases with temperature"),("(C) Desorption of a solute on liquid surface","(R) Increases the surface tension of the liquid "),("(D)Adsorption of a solute on a liquid ","(S) Decreases the surface tension of the liquid "):}
Column - I and Column - II contains four emtries each. Entries of Column -I are to be matched with some entries of Column - II . One or more than one entries of Column -I may have the matching with the same entries of Column - II. {:("column-I","column-II"),((A)" Chemisorption",(P)" Exothermic"),((B)" Physical adsorption",(Q)" Endoothermic "),((C)" Desorption",(R)" Removal of adsorbed material"),((D)" Activation of adsorbent",(S)" Highly specific in nature"):}
The activation energy and enthalpy of chemisorption of oxygen on a metal surface is 37.3kJ mol^(-1) and -72.1kJ mol^(-1) At a certain pressure, the rate constant for chemisorption is 1.2xx10^(-3) at 318 K . What will be the value of the rate constant at 308K ?
Giving appropriate examples, explain how the types of processes of adsorption (physisorption and chemisorption) are influenced by the prevailing temperature , the surface area of adsorbent and the activation energy of the process?
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.
The correct statement(s) pertaining to the adsorption of a gas on a solid surface is(are) (i) adsorption is always exothermic (ii) physisorption may transform into chemsisorption transform into chemisorption at high temperature (iii) physisorption increases with increasing temperature but chemisorption decreases with increasing temperature . (iv) chemisorption is more exothermic than physisorption , however it is very slow due to higher energy of activation.
Adsorption is the tendency of accumulation of molecular species at the surface of solid or liquid. Depending upon the nature of bonds or forces of attraction between adsorbate and adsorbent. It is classofied between physisorption and chemisorption. Which of the following gas molecules have maximum value enthalpy of physisorption?
Adsorption is the tendency of accumulation of molecular species at the surface of solid or liquid. Depending upon the nature of bonds or forces of attraction between adsorbate and adsorbent. It is classofied between physisorption and chemisorption. Which of the following characteristics is not correct for physical adsorption?
Adsorption is the tendency of accumulation of molecular species at the surface of solid or liquid. Depending upon the nature of bonds or forces of attraction between adsorbate and adsorbent. It is classofied between physisorption and chemisorption. Which of the following gases is adsorbed most by activated charcoal?
Adsorption is the tendency of accumulation of molecular species at the surface of solid or liquid. Depending upon the nature of bonds or forces of attraction between adsorbate and adsorbent. It is classofied between physisorption and chemisorption. Which of the following statements are correct? (More than one correct)
Recommended Questions
- Chemisorption
Text Solution
|
- Chemisorption
Text Solution
|
- The rate of chemisorption :
Text Solution
|
- रासायनिक अधिशोषण (chemisorption) है :
Text Solution
|
- The extent of chemisorption-
Text Solution
|
- Chemisorption
Text Solution
|
- The rate of chemisorption
Text Solution
|
- chemisorption..............
Text Solution
|
- The heat of chemisorption is .
Text Solution
|