IB Diploma · Chemistry · Chapter 13

Ch 13 R1.1 Measuring enthalpy changes: complete notes

Neat, exam-ready notebook-style notes for Ch 13 R1.1 Measuring enthalpy changes, following the IB Diploma syllabus, SL and HL. This chapter is part of the complete Chemistry Notes for IB Diploma Students (SL and HL): All 23 Topics.

Test yourself: Chapter 13 online MCQ test, free: 10 questions, 15 minutes, instant score and solutions →

Free preview: Ch 13 R1.1 Measuring enthalpy changes notes

A quick look at the chapter from our IB Diploma Chemistry notes. The full chapter notes have the detailed explanations, diagrams and practice questions with answers.

Topics in this chapter

1. What you must be able to do
2. Energy transfer in reactions
3. Heat and temperature are different
4. Endothermic and exothermic
5. Energy profiles
6. Standard enthalpy change and \(Q = mc\Delta T\)
7. Calorimetry in practice
8. Why the measured temperature change is smaller than it should be
9. Method, evaluation and eight exam steps
10. Exam steps for an enthalpy calculation

“I can” checklist: what you must be able to do

• I can distinguish heat from temperature and describe energy transfer between system and surroundings.
• I can predict the temperature change for exothermic and endothermic reactions.
• I can sketch and interpret energy profiles, with \(E_a\), \(\Delta H\) and relative stability.
• I can define the standard enthalpy change of a reaction and state standard conditions.
• I can calculate \(\Delta H\) from \(Q = mc\Delta T\) and \(\Delta H = -Q/n\), using the limiting reagent.
• I can evaluate sources of error in calorimetry and suggest improvements.

What is inside the full chapter notes

• Concept notes with 8 worked examples
• Energy profiles and calorimeter diagrams
• A temperature–time graph with extrapolation
• Common mistakes; investigation (IA) ideas
• 15 Paper 1A-style MCQs, explained
• 3 Paper 2-style questions and one Paper 1B-style data question, with mark schemes
• Quick-reference sheet and "I can" checklist

See real pages (free sample)

Get all 23 chapters · ₹499

What you get in the pack

• All 23 topics of IB Diploma Chemistry for students taking Standard Level or Higher Level (first assessment 2025): the particulate nature of matter, the nuclear atom, electron configurations, the mole, ideal gases, ionic, covalent and metallic bonding, materials and polymers, the periodic table, functional groups, enthalpy changes, energy cycles, fuels, entropy and spontaneity, the amount of chemical change, rate of reaction, equilibrium, acids and bases, redox and electrochemistry, radical reactions, nucleophilic and electrophilic mechanisms
• Every syllabus statement covered in order, each marked SL or HL, with clear notes, tables and diagrams drawn for these notes
• Worked examples in every topic: calculations and model answers that show how to earn the marks
• Original Paper 1A-style multiple-choice questions with explained answers, plus Paper 2-style structured and data-based questions with full mark schemes (no past-paper reprints)
• Common mistakes and investigation (internal assessment) ideas for every topic
• Quick-reference sheet and an "I can" checklist at the end of every topic
• Colour PDF and a black and white copy of every chapter for printing
• Independent notes for IB Diploma students; not endorsed by or affiliated with the International Baccalaureate Organization (IBO)

All chapters in this pack

1. Ch 1 S1.1 Introduction to the particulate nature of matter
2. Ch 2 S1.2 The nuclear atom
3. Ch 3 S1.3 Electron configurations
4. Ch 4 S1.4 Counting particles by mass: the mole
5. Ch 5 S1.5 Ideal gases
6. Ch 6 S2.1 The ionic model
7. Ch 7 S2.2 The covalent model (2.2.1-2.2.7)
8. Ch 8 S2.2 The covalent model (2.2.8-2.2.16)
9. Ch 9 S2.3 The metallic model
10. Ch 10 S2.4 From models to materials
11. Ch 11 S3.1 The periodic table
12. Ch 12 S3.2 Functional groups
13. Ch 13 R1.1 Measuring enthalpy changes
14. Ch 14 R1.2 Energy cycles in reactions
15. Ch 15 R1.3 Energy from fuels
16. Ch 16 R1.4 Entropy and spontaneity (HL)
17. Ch 17 R2.1 How much? The amount of chemical change
18. Ch 18 R2.2 How fast? The rate of chemical change
19. Ch 19 R2.3 How far? The extent of chemical change
20. Ch 20 R3.1 Proton transfer reactions
21. Ch 21 R3.2 Electron transfer reactions
22. Ch 22 R3.3 Electron sharing reactions
23. Ch 23 R3.4 Electron-pair sharing reactions