Look up the equilibrium constant for the ion pairing reaction Zn²⁺ + SO₄^2- ↔ ZnSO₄(aq) in Appendix J. (Found to be 2.34)

a) Using the systematic treatment of equilibrium, and neglecting the activity coefficients and any other reactions, the molar concentration of Zn²⁺ was found to be______ in 0.019 F ZnSO₄.

b) Use the answer in part (a) to compute the ionic strength and activity coefficients of Zn²⁺ and SO₄^2-. Then repeat the calculation using activity coefficients. Repeat the procedure two more times to find a good estimate of the molar concentration of Zn²⁺to be_____. Report the answers to two significant figures.

\n.