art A: mean Activity coefficients
(1) Examine the effect of changing the value of molality on the mean activity coefficients1 γ± [0.2mol, 0.02mol, 0.1mol ,0.03 0.01mol]for a given ionic compound [KBr]. Select 5 molalities in the mmol/kg range. Make a table of values of molality, ionic strength (I), and γ± .
Make a plot of log γ± vs square root of ionic strength, I½ .
(2) Study the effect of changing the charge number of ions on the mean activity coefficients γ± at a constant molality of 1 mmol/kg for several ionic compounds [KBr] you select.
(3) What is the conclusion on effect of molality (ionic strength) and ionic charge numbers on γ± ?. Where is the deviation from ideal behavior is most likely? Explain.
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