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Chemical Thermodynamics — Syllabus

ICSE · Class 11 · Chemistry

What Chemical Thermodynamics covers in ICSE Class 11 Chemistry: 4 topics, for the 2026-27 session. Part of the ICSE Class 11 Chemistry syllabus.

91 questions44 flashcards6 formulas & key relations5 concepts

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A diagram illustrating the three types of thermodynamic systems: open, closed, and isolated, showing the exchange of matter and energy with the surroundings.
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4 Topics · ICSE Class 11 Chemistry · 2026-27

Topics in Chemical Thermodynamics

1

1. Basic Ideas: System, Surroundings, and Types of Systems

  • A system is the specific part of the universe under study with fixed boundaries.
  • The surroundings are the rest of the universe other than the system.
  • Open systems exchange both matter and energy with the surroundings.
2

2. First Law of Thermodynamics and Internal Energy

  • The first law of thermodynamics is the law of conservation of energy.
  • Energy can neither be created nor destroyed, only converted from one form to another.
  • Internal energy U or E is the total energy associated with a fixed amount of a substance under given conditions.
3

3. Pressure-Volume Work and Reversible or Irreversible Expansion

  • Pressure-volume work occurs when the system and surroundings are at different pressures.
  • For expansion of a gas, work done by the system is negative.
  • For contraction of a gas, work done on the system is positive.
4

4. Enthalpy and Heat Changes at Constant Pressure

  • Enthalpy H is the total heat content of a system at constant pressure.
  • H = U + PV.
  • Enthalpy is a state function.

Key Concepts

Central concept: Chemical thermodynamics is the study of energy changes, heat, work, spontaneity, and equilibrium in chemical and physical processes.

System and surroundingsThermodynamic propertiesThermodynamic processesHeat and workFirst law of thermodynamicsEnthalpyHeat capacitiesSecond law of thermodynamics

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Frequently Asked Questions

What are the important topics in Chemical Thermodynamics for ICSE Class 11 Chemistry?
Key topics in Chemical Thermodynamics include Basic Ideas: System, Surroundings, and Types of Systems, First Law of Thermodynamics and Internal Energy, Pressure-Volume Work and Reversible or Irreversible Expansion, Enthalpy and Heat Changes at Constant Pressure. Study these first, then practise questions on each for Class 11 exams.
How should I revise Chemical Thermodynamics for Class 11 exams?
Learn the core ideas first, then work through the 91 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.

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