化学势 Chemical potential Gibbs energy depends on composition, pressure and temperature(so, G may change if any of these variables change - which they may )For a system with components A, B dG= vdp ST+A如A+HB2mB+… which is the fundamental equation of classical thermodynamics At constant temperature and pressure, BB Recall e max dG △G e. max in+ e. max NA B What does this mean? Non-expansion work can happen just from changing system composition at constant pressure and temperature (e.g., battery, chemical rxn in two sites called electrodes, and the work the battery produces comes from reactants going to products化学势 Chemical Potential Recall: