
What is physical adsorption?
Answer
163.2k+ views
Hint: The adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface is known as adsorption. Now, depending on the nature of the interaction between the adsorbate and the adsorbent and the properties of adsorbate physical and chemical adsorption are classified.
Complete Step by Step Answer:
The adsorption where the adsorption takes place between the adsorbate and adsorbent due to weak hydrogen bonding or van der waal’s force is defined as the physical adsorption.
The properties of physical adsorption are as follows-
1. It has weak forces like vander waals force or hydrogen bonding between adsorbate and adsorbent.
2. Physical adsorption is reversible in nature.
3. Physical adsorption depends on the surface area of the adsorbent because as the surface area of the adsorbent will increase, physical adsorption additionally will increase.
4. Physical adsorption is the slowest process.
5. It is not independent of temperature. It increases with a decrease in temperature.
6. It is highly specific.
7. It is spontaneous and has negative enthalpy and entropy.
Note: Adsorption is two types. One is physical adsorption where a weak vanderwal bond or hydrogen bond is present between adsorbate and adsorbent. It is dependent on temperature as it has physical bonds which vibrate in presence of high temperature.
Complete Step by Step Answer:
The adsorption where the adsorption takes place between the adsorbate and adsorbent due to weak hydrogen bonding or van der waal’s force is defined as the physical adsorption.
The properties of physical adsorption are as follows-
1. It has weak forces like vander waals force or hydrogen bonding between adsorbate and adsorbent.
2. Physical adsorption is reversible in nature.
3. Physical adsorption depends on the surface area of the adsorbent because as the surface area of the adsorbent will increase, physical adsorption additionally will increase.
4. Physical adsorption is the slowest process.
5. It is not independent of temperature. It increases with a decrease in temperature.
6. It is highly specific.
7. It is spontaneous and has negative enthalpy and entropy.
Note: Adsorption is two types. One is physical adsorption where a weak vanderwal bond or hydrogen bond is present between adsorbate and adsorbent. It is dependent on temperature as it has physical bonds which vibrate in presence of high temperature.
Recently Updated Pages
JEE Main 2021 July 25 Shift 1 Question Paper with Answer Key

JEE Main 2021 July 22 Shift 2 Question Paper with Answer Key

JEE Atomic Structure and Chemical Bonding important Concepts and Tips

JEE Amino Acids and Peptides Important Concepts and Tips for Exam Preparation

JEE Electricity and Magnetism Important Concepts and Tips for Exam Preparation

Chemical Properties of Hydrogen - Important Concepts for JEE Exam Preparation

Trending doubts
JEE Main 2025 Session 2: Application Form (Out), Exam Dates (Released), Eligibility, & More

JEE Main 2025: Derivation of Equation of Trajectory in Physics

Displacement-Time Graph and Velocity-Time Graph for JEE

Types of Solutions

Degree of Dissociation and Its Formula With Solved Example for JEE

Electric Field Due to Uniformly Charged Ring for JEE Main 2025 - Formula and Derivation

Other Pages
JEE Advanced Marks vs Ranks 2025: Understanding Category-wise Qualifying Marks and Previous Year Cut-offs

JEE Advanced Weightage 2025 Chapter-Wise for Physics, Maths and Chemistry

NCERT Solutions for Class 11 Chemistry In Hindi Chapter 1 Some Basic Concepts of Chemistry

NCERT Solutions for Class 11 Chemistry Chapter 7 Redox Reaction

Instantaneous Velocity - Formula based Examples for JEE

JEE Advanced 2025 Notes
