Calculate the activity coefficient, y, of Sn2+ when the ionic strength of the solution, h, is 0.090 M by linear interpolation of the data in the table. Ionic strength (B, M) 0.001 Activity coefficient (Y5n2+) 0.870 0.005 0.749 0.01 0.675 = YSn2 + 0.05 0.485 0.1 0.405 Calculate the activity coefficient, y, of Sn2+ when the ionic strength of the solution, u, is 0.090 M by using the extended Debye-Hckel equation at 25 C, where the ion size is 600 pm. Yan? + =