Skip to main content
Super TutorResources
Chapter 31 of 41
Syllabus

Chemical Thermodynamics — Syllabus

Telangana Open School (TOSS) · Class 12 · Chemistry

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

46 questions30 flashcards3 formulas & key relations5 concepts

Interactive on Super Tutor

Studying Chemical Thermodynamics? 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 Chemical Thermodynamics

1

1. System, Surroundings, and Types of Systems

  • A system is the part of the universe under study; the rest is called surroundings.
  • Isolated system: No exchange of matter or energy with surroundings (e.g., thermos flask).
  • Closed system: Exchanges energy but not matter (e.g., hot water in a closed steel flask).
2

2. Exothermic and Endothermic Reactions

  • Exothermic reactions release heat to surroundings (ΔH < 0).
  • Endothermic reactions absorb heat from surroundings (ΔH > 0).
  • Examples: Combustion (exothermic), photosynthesis (endothermic).
3

3. First Law of Thermodynamics and Internal Energy

  • Energy cannot be created or destroyed — it only changes form (conservation of energy).
  • Mathematically: ΔU = q + w
  • Internal energy (U) is the total energy of a system — a state function.
4

4. Enthalpy and Its Applications

  • Enthalpy (H) = U + pV; a state function.
  • ΔH = q_p — enthalpy change equals heat absorbed at constant pressure.
  • ΔH = ΔU + pΔV (for constant pressure).

Key Concepts

Central concept: Chemical Thermodynamics

System and SurroundingsState of a SystemProperties of a SystemTypes of ProcessesExothermic and Endothermic ReactionsThermochemical EquationsFirst Law of ThermodynamicsStandard Enthalpy of Reactions

Work through every topic in Chemical Thermodynamics with notes and quizzes

Start This Chapter

Frequently Asked Questions

What are the important topics in Chemical Thermodynamics for Telangana Open School (TOSS) Class 12 Chemistry?
Key topics in Chemical Thermodynamics include System, Surroundings, and Types of Systems, Exothermic and Endothermic Reactions, First Law of Thermodynamics and Internal Energy, Enthalpy and Its Applications. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Chemical Thermodynamics for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 46 practice questions on Chemical Thermodynamics. 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 Chemical Thermodynamics

All Telangana Open School (TOSS) Class 12 Chemistry Syllabus

For serious students

Get the full Chemical Thermodynamics 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