Molal volumes of K2SO4, K3Fe(CN)6, and K4Fe(CN)6in water and in solutions of NaCl

摘要

Pycnometric and dilatometric measurements have been made on solutions of K2SO4, K3Fe(CN)6, and K4Fe(CN)6in water and in solutions 0.01442m, 0.03908m, 0.09044mof NaCl at 25deg;C. Deviations from the Debyemdash;Huuml;ckel predictions even at very high dilutions are found for K2SO4and K4Fe(CN)6. Some similarities are found with the predictions of the Mayer theory in the DHLLplus;B2form, whereas the comparison is less favorable with the predictions of IPBE. As a general rule, when deviations from the Debyemdash;Huuml;ckel theory are found in water solutions, the same kind of deviations are observed also in NaCl, even at very small concentrations of the multivalent electrolytes.