Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
A reaction in which atoms are rearranged to form a different isomer without change in molecular formula, phase, or number of molecules; typically has ΔS° ≈ 0.
AP course connection
Topic 9.2: 9.2 Absolute Entropy and Entropy Change