The Problem of Corresponding States

Walden found that the Walden products of completely iodized melts could be predicted for a wide range of salts at the melting point. However, when he attempted to analyze the data for associated systems he found it easier to compare at the same temperature individual properties for salts having about the same volume but different degrees of alkylation. 

Such an approach then leads into various hole and jump theories as these activation energies and entropies can be related to thermodynamic 

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