College BoardAPFree Response2015–2025 · 10 FRQ papers analysed

AP Chemistry
FRQ Topic Frequency Analysis

We analysed 10 College Board AP Chemistry Free Response Questions (2015–2025), identifying which topics appear most frequently and where to focus your FRQ practice for maximum points.

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2026 AP Exam Data-Driven Forecast

“Based on our analysis of 10 College Board AP Chemistry Free Response Questions, Thermodynamics is a recurring focus area, appearing in 80% of FRQs. For the 2026 AP exam, we have identified 4 high-probability topics. Focus your FRQ practice on these areas to maximise your score.”

Based on 10 official College Board FRQ papers
Top FRQ topics by frequency (2015–2025)
Thermodynamics
8/10 FRQsHigh
consistent80%
Chemical Equilibrium
6/10 FRQsHigh
consistent60%
Electrochemistry
6/10 FRQsHigh
consistent60%
Acid-Base Equilibria6/10 FRQs
Kinetics3/10 FRQs
Redox Reactions3/10 FRQs
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12 more topics in the full analysis

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Key FRQ insight
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Thermodynamics: appears in 8/10 papers
This is the most tested topic. Focus on laws of thermodynamics and their applications.
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Chemical Equilibrium: appears in 6/10 papers
A high priority topic. Revise Le Chatelier's principle and equilibrium constant calculations.
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Electrochemistry: appears in 6/10 papers
Important for understanding redox reactions and electrochemical cells. Prioritize Nernst equation.

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Full FRQ topic frequency breakdown
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