(b) The value of the solubility-product constant, $K_{sp}$, for Zn(OH)$_2$ is 7.7 x 10$^{-17}$ at 25°C.
(i) Calculate the solubility (in moles per liter) of Zn(OH)$_2$ at 25°C in a solution with a
pH of 9.35.
(ii) At 25°C, 50.0 milliliters of 0.100-molar Zn(NO$_3$)$_2$ is mixed with 50.0 milliliters of
0.300-molar NaOH. Calculate the molar concentration of Zn$^{2+}$(aq) in the resulting
solution once equilibrium has been established. Assume that volumes are additive.