Question

Ion pairing. As in Problem $8-30$, find the concentration, ionic strength, and ion pair fraction in localid="1654942556135" $0.025\mathrm{F}{\mathrm{Na}}_2{\mathrm{SO}}_4$. Assume that the size of the${{\mathrm{NaSO}}^{-}}_4=500\mathrm{pm}$

Short answer

Thus the Ionic Strength and Ion Pair Fraction of $0.025\mathrm{F}{\mathrm{Na}}_2{\mathrm{SO}}_4$ is 0.07051M and 9%

Step-by-step solution

Step 1:Calculating the Ionic Strength and Ion Pair Fraction.

This is also a task that need to be performed in the Excel. And the values will be,

$$\begin{gathered} \left[{\mathrm{Na}}^{+}\right]=0.04775\hspace{0.17em}\mathrm{M} \\ \left[{{\mathrm{SO}}^{2-}}_4\right]=0.02275\mathrm{M} \\ \left[{{\mathrm{NaSO}}^{-}}_4\right]=0.002246\mathrm{M} \end{gathered}$$

Ionic Strength =0.070514M

Ion Pair Fraction =9%

Step 2:Ionic Strength and Ion Pair Fraction of 0.025  F   Na2SO4

Thus the Ionic Strength and Ion Pair Fraction of $0.025\mathrm{F}{\mathrm{Na}}_2{\mathrm{SO}}_4$ is $0.07051\mathrm{M}$ and 9%