Question

- ADVANCED MATERIAL Calculating the solubility of an lonic compound when a common ion is present Calculate the solubility at 25 C of NI(OH), in pure water and in a 0.0160 M NaOH solution. You'll find K. data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: solubility in 0.0160 M NaOH solution: 0 x 5 ?

ksp = 5.48 x 10^-16

Answer 1

e kap of NicOH, = 2x10-15 1.24 & 204 (09) Ni COH)2 S 25 In pure water kap = [N ozr] [OH-] 2 2x1015 = (5) (25) 2 s = 7.94 x 100 -6 mol Ltr = 7.guxiob & molar moss of Nicoh 8 - 7.94 x 106 x 92.7 gon Into s' = 7.36x10 -4 gomlum 9n NOOH solution → NicoH) Net (agg + 204 25 +0.016 S. salla 325 toaleñ0.016 NOOH is complete soluble assume seco. 016 2x1615 = Sx (0.016) 2 S = 7.81x10 12 mol si = 7.81x10 12x92.7 gmich I sa = 7.23 x 150 gmium)