Notices of the proceedings at the meetings of the members of the Royal Institution of Great Britain with abstracts of the discourses . issociated electrolytes,chiefly salts, exhibit even iu dilute solutions (over 0*05 normal) Acetate Chlorate Benzoate Chloride Sulphamiate Nitrate Phtalamido-acetate But y rateSulphateSalts of IarcLrosarulureFig. 9. anomalies, that are not yet wholly explained. Professor Jahn, ofBerlin, is at work upon this most interesting question. The equilibrium between a greater number of electrolytes hasbeen investigated by myself, and found to be in good agreement withthe
Notices of the proceedings at the meetings of the members of the Royal Institution of Great Britain with abstracts of the discourses . issociated electrolytes,chiefly salts, exhibit even iu dilute solutions (over 0*05 normal) Acetate Chlorate Benzoate Chloride Sulphamiate Nitrate Phtalamido-acetate But y rateSulphateSalts of IarcLrosarulureFig. 9. anomalies, that are not yet wholly explained. Professor Jahn, ofBerlin, is at work upon this most interesting question. The equilibrium between a greater number of electrolytes hasbeen investigated by myself, and found to be in good agreement withthe theoretical previsions. This section includes the questions onthe weakening of an acid by addition of its salts, and on the so-calledavidity of the different acids, that is, the proportion in which twoacids divide a base at partial neutralisation. Calculation gives verynearly the numbers observed experimentally by Thomsen andOstwald. For heterogeneous equilibria between electrolytes thetheory is worked out by vant Hoff and Nernst, who have in thisway elucidated the common method to precipitate salts used inanalytical 564 Professor Svante Arrhenius [June 3, By help of the gaseous laws it is also possible to determine theheat evolved at the dissociation of a weak acid or base, and in thisway I was able to calculate the heat of neutralisation of acids andbases in a general manner. In an analogous way, Fanjung calculatedthe changes of volume at dissociation of a weak acid or base and atthe neutralisation of these bodies. All these calculations gave valuesvery nearly agreeing with the observed ones. An important role is played by the water, which may be regardedas a weak acid or base. By its electrolytical dissociation, itcauses the hydrolysis of salts of weak acids and bases. By observa-tion of the hydrolysis, it was possible to calculate the electrolyticdissociation of water, and this quantity was soon after determined byelectrical measurements by Kohlrausch and Heydw
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