5. Ksp for Mg(OH)2 is 5.61012. Calculate the solubility of Mg(OH)2 in moles/L. (2marks) 6. A solution at equilibrium with a precipitate of Ag2S was found to contain 1.61016M of s2 and 2.51016M of Ag+1. Calculate the solubility product constant of Ag2S. (2 marks) 7. Ksp for Lead (II) Sulphate, PbSO4, is 1.8108. Predict whether a precipitate will form when 10mL of 1.0103M lead (II) Acetate, Pb(CH3COO2, is added to 40mL of 1.5X 104MNa2SO4. (4 marks) 8. Predict whether a precipitate will form when 20mL of 1.0104MZn(NO3)2 solution is added to 60mL of 2.0105MCa(OH)2. Ksp=1.81014 for Zn(OH)2. (4 marks)