BCH 2333 Chapter Notes - Chapter 1.3: Spontaneous Process, Stoichiometry, Thermodynamics
8 Feb 2017
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Must be conserved, can be in different forms. Free energy change = change in enthalpy and entropy. State condition temp 25, pressure 1atm, ph 7. Constant exchange of matter and energy with surroundings. Enzymes increase the rate at which a reaction approaches equilibrium. Surroundings = the rest of the universe deltau is change in energy in the system. Delta u = heat (q) - work (w) Work done by expansion of gas = pdeltav. Delta h = deltau + pdeltav = qp-w+pdeltav qp is heat at constant pressure w = pdeltav. Change in enthalpy = heat (at constant pressure) Spontaneous process = no additional input of energy from outside the system. Disorder = # of energetically equivalent ways of arranging the components of a system = w. W in a disordered system is higher than in an ordered system. Eg gas flowing from a full bulb to fill two bulbs but not the other way around.
