Look up the equilibrium constant for the ion-pairing reaction in Appendix J. (a) Use the

Chapter 7, Problem 7-28

(choose chapter or problem)

Look up the equilibrium constant for the ion-pairing reaction in Appendix J. (a) Use the systematic treatment of equilibrium to find [Zn2] in 0.010 F ZnSO4. Neglect activity coefficients and any other reactions. (b) Use the answer from part (a) to compute the ionic strength and activity coefficients of Zn2 and . Then repeat the calculation using activity coefficients. Repeat the procedure two more times to find a good estimate of [Zn2]. What percentage is ion paired? What is the ionic strength of the solution? (c) Two possibly important reactions that we did not consider are acid hydrolysis of Zn2 and base hydrolysis of . Write these two reactions and find their equilibrium constants in Appendixes I and G. 7-2