Thallium, amalgams, activity

TABLE XXVIII. ACTIVITY OF MERCURY IN THALLIUM AMALGAMS AT... 

To illustrate the application of equation (38.33) to calculate the activity or activity coefficient of one constituent of a solution when that of the other is known, use may be made of the results for the thallium amalgams given in 38e. The values of a2/N2 for thallium at various compositions are available (Table XXVII), and the data required for the evaluation of the... 

The E.M.F. of the cell is thus seen to be independent of the concentration of the thallous salt in the cell solution, and is determined by the ratio of the activities of the thallium in the two amalgams constituting the electrodes. 

Problem Calculate the activity coefficient which indicates the departure from Raoult s law of thallium in the amalgam containing 0.424 mole fraction of thallium. 

For this amalgam, it is seen that 02 in Table XXVII is 3.268 the value in terms of pure liquid thallium as the standard state is then equal to 3.268/8.3. The activity coefficient is thus given by... 

The partial pressure of mercury above an amalgam with thallium in which its mole fraction (i.e. the Hg) is 0.497 is 43.3% of its value over pure mercury at the same temperature (326 C). Calculate the activity coefficient of the mercury in this solution. What is the change in free... 

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