alleryStart learning →In thermodynamics, a reversible process is one that takes place at a rate that is:
ASlow, always at equilibrium
BFast, far from equilibrium
CFixed, unable to change
DRandom, entirely unpredictable
Answer & Solution
Correct answer: A. Slow, always at equilibrium
1. Reversibility is defined by how close the process stays to equilibrium.
2. A reversible process takes place at such a slow rate that it is always at equilibrium.
3. Its direction can be changed by an infinitesimally small change in some condition.
4. Real processes proceed faster and are therefore irreversible.
_Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 16 'Thermodynamics', sections 16.1-16.4_
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