Natural Variables and Chemical Potential

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This is similar to the natural variable equation for G. We can also write the derivatives from equations 6.20 and 6.21 in terms of the change in chemical potential, A/x. This will be more relevant when we consider phase transitions. Equations 6.20 and 6.21 can be rewritten as 

The same argument applies for the liquid-to-gas phase transition. In this case, the slope of the curve is usually higher because the difference in entropy between liquid and gas phases is much larger in magnitude than the difference in S between solid and liquid phases. However, the reasoning is the same, and equation 6.23 explains why liquids change to gas when the temperature is increased. 

In terms of the variables in equations 6.23 and 6.24, state what happens to the following equilibria when the given changes in conditions are imposed. Assume all 

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