Practice: Calculate the activity coefficient of H** ^{+}** using the extended Debye-Huckel equation for a solution comprised of H

**and I**

^{+}**. Given that H**

^{–}**has a size of 9.00 x 10**

^{+}**m and the molar concentration of the solution is 0.075.**

^{-10}log γ = − 0.51 z ^{2} *√*µ / 1 + (α *√*µ / 305)