This is a bear to go through on this forum. I'll get you started.
(BaCl2) = 0.01 M so (Ba^2+) = 0.01 M and (Cl^-) 0.02 M
Look in your text, find the correct formula for ionic strength and activity coefficients and finish the calculations.
A solution contains 0.010 M BaCl2. Calculate the molarity of the ions in solution, the ionic strength of the solution, the activity coefficient of the barium ion and its activity. Repeat for the chloride ion. Show all calculations please.
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