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Date of Award
Master of Science (MS)
The purpose of this investigation was to observe the foaming characteristics of some electrolytic solutions and to investigate some of the physical properties of the solutions, particularly noting any relations or trends indicated by the study which might contribute to a better understanding of foam. Method and Procedure: A dynamic foam meter was used to study the foaming characteristics of solutions of the salts, NaCl, Na2CO3, CaCl2*2H2O, FeCl3*6H2O, and Na3PO4*12H2O. Concentration of the solutions studied ranged from 0.05 molar to saturated. A description of the dynamic foam meter and its operation is given. The surface tension, viscosity, and density of each solution were determined. The results of the determinations are given in tabular form in the paper. Summary of Results: Several trends are noted from a graphical treatment of the data. In general, the foaminess of a solution increases with increasing concentration. Also, a definite order of foaminess is reported which suggests that the foaminess of the solutions increases with increasing charge on the ions. The increasing order of the foaming power or ability of the solution is NaCl, CaCl2, Na2CO3, FeCl3, and Na3PO4. From the graphical treatment it is also observed that, of the variables viscosity, surface tension, density, and concentration, viscosity appears to be the most important contributor to the foaminess of a solution. This observed trend is substantiated by statistical correlation coefficients calculated from the data. However, viscosity alone does not explain the observed foaming properties of the solutions. Suggestions for further studies are also discussed in the paper.
Copyright 1958 Jerrold Anderson
Anderson, Jerrold, "An Investigation of the Foaminess of Some Electrolytic Solutions" (1958). Master's Theses. 594.