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Thermodynamics of concentration cells (eBook)

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The general thermodynamic expression for an isothermal process may be written A = H T./b d/A//b d/T, where H denotes the change in the internal energy of the system, and A the max, work or the change of free energy for a reversible physical or chemical process conducted isothermally. When applied to concentration cells this becomes, in the form of the Helmholtz equation, E = H/nF T. dE/dT. From these equations it follows: (1) When H has a constant or a zero value, dA/dT or dE/dT is constant, and A = H aT where /b a/ is an integration constant. (2) When A = 0, H = -T/sub e/dA/dT. This condition is found in the case that A passes through a zero value at some definite temperature, /b e.g./, transition-point. (3) In his recent

The general thermodynamic expression for an isothermal process may be written A = H T./b d/A//b d/T, where H denotes the change in the internal energy of the system, and A the max, work or the change of free energy for a reversible physical or chemical process conducted isothermally. When applied to concentration cells this becomes, in the form of the Helmholtz equation, E = H/nF T. dE/dT. From these equations it follows: (1) When H has a constant or a zero value, dA/dT or dE/dT is constant, and A = H aT where /b a/ is an integration constant. (2) When A = 0, H = -T/sub e/dA/dT. This condition is found in the case that A passes through a zero value at some definite temperature, /b e.g./, transition-point. (3) In his recent


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Thermodynamics of concentration cells

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