Skip to main content
Super TutorResources
Chapter 41 of 41
Syllabus

Adsorption and Catalysis — Syllabus

Telangana Open School (TOSS) · Class 12 · Chemistry

What Adsorption and Catalysis covers in Telangana Open School (TOSS) Class 12 Chemistry: 4 topics, for the 2026-27 session.

47 questions30 flashcards4 formulas & key relations5 concepts

Interactive on Super Tutor

Studying Adsorption and Catalysis? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for syllabus and more.

Try Super Tutor — Free

Free trial, no card needed.

4 Topics · Telangana Open School (TOSS) Class 12 Chemistry · 2026-27

Topics in Adsorption and Catalysis

1

Adsorption: Definition and Basics

  • Adsorption is the process in which molecules of a gas or solute are attracted and retained on the surface of a solid.
  • The substance that gets adsorbed is called the adsorbate; the solid that adsorbs is called the adsorbent.
  • Adsorption is different from absorption — in absorption, the substance penetrates the bulk, while in adsorption, it stays on the surface.
2

Types of Adsorption

  • There are two main types: physical adsorption (physisorption) and chemical adsorption (chemisorption).
  • Physisorption involves weak van der Waals forces; chemisorption involves chemical bond formation.
  • Physisorption is reversible, multilayered, and occurs at low temperature; chemisorption is irreversible, monolayered, and requires higher temperature.
3

Factors Affecting Adsorption

  • Nature and surface area of adsorbent: Porous and rough solids with high surface area adsorb more.
  • Nature of adsorbed gas: Easily liquefiable gases (like NH₃, SO₂) are adsorbed more than permanent gases (like H₂, O₂).
  • Temperature: Adsorption decreases with rise in temperature (exothermic process).
4

Adsorption Isotherms

  • Adsorption isotherms show the variation of adsorption (x/m) with pressure (p) at constant temperature.
  • Freundlich isotherm is empirical: x/m = k p^(1/n), where n > 1.
  • Logarithmic form: log(x/m) = log k + (1/n) log p — gives straight line when plotted.

Key Concepts

Central concept: Surface Phenomena in Solids

AdsorptionCatalysis

Work through every topic in Adsorption and Catalysis with notes and quizzes

Start This Chapter

Frequently Asked Questions

What are the important topics in Adsorption and Catalysis for Telangana Open School (TOSS) Class 12 Chemistry?
Key topics in Adsorption and Catalysis include Adsorption: Definition and Basics, Types of Adsorption, Factors Affecting Adsorption, Adsorption Isotherms. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Adsorption and Catalysis for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 47 practice questions on Adsorption and Catalysis. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Adsorption and Catalysis

All Telangana Open School (TOSS) Class 12 Chemistry Syllabus

For serious students

Get the full Adsorption and Catalysis chapter — start free.

Quizzes, flashcards, an AI doubt solver and a study plan for Telangana Open School (TOSS) Class 12 Chemistry. Free to start, no card needed.

Try Super Tutor Free
Try this chapter free