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Spontaneity of Chemical reactions — Study Plan

Telangana Open School (TOSS) · Class 12 · Chemistry

A step-by-step study plan for Spontaneity of Chemical reactions, Telangana Open School (TOSS) Class 12 Chemistry: what to learn first, what to practise.

51 questions30 flashcards6 formulas & key relations5 concepts

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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas and key ideas. Focus on: Spontaneous vs Non-Spontaneous Processes, Entropy and Its Role in Spontaneity, Gibbs Energy and Prediction of Spontaneity.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 51 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to Spontaneity of Chemical reactions after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • Spontaneous processes occur naturally without continuous external help.
  • Non-spontaneous processes require continuous external energy.
  • Spontaneity does not indicate the speed of the reaction.
  • Entropy is a measure of disorder or randomness.
  • Gases have higher entropy than liquids, which have higher entropy than solids.
  • ΔS = q_rev / T
  • Spontaneous processes increase the entropy of the universe.
  • ΔS_universe > 0 for spontaneous processes.
  • ΔS_universe = 0 at equilibrium.

Common Mistakes to Avoid

Spontaneous reactions always happen quickly.

All exothermic reactions are spontaneous.

Entropy always increases when a solid turns into a liquid or gas.

Memory Tips

Spontaneous process definition

Entropy = measure of disorder

ΔS_universe > 0 for spontaneous process

Gibbs Energy: ΔG = ΔH – TΔS

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Frequently Asked Questions

What are the important topics in Spontaneity of Chemical reactions for Telangana Open School (TOSS) Class 12 Chemistry?
Key topics in Spontaneity of Chemical reactions include Spontaneous vs Non-Spontaneous Processes, Entropy and Its Role in Spontaneity, Gibbs Energy and Prediction of Spontaneity, Entropy Changes and Applications. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Spontaneity of Chemical reactions for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 51 practice questions on Spontaneity of Chemical reactions. 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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