In: Chemistry
A) A saturated solution of manganese(II) hydroxide was prepared, and an acid–base titration was performed to determine its Ksp at 25 °C. The endpoint was reached when 55.00 mL of the manganese(II) hydroxide solution was titrated with 2.55 mL of 0.0050 M HCl solution. What is the Ksp of manganese(II) hydroxide?
B) What is the approximate concentration of free Ag+ ion at equilibrium when 1.86×10-2 mol silver nitrate is added to 1.00 L of solution that is 1.330 M in S2O32-. For [Ag(S2O3)2]3-, Kf = 2.9×1013.
C) What is the approximate concentration of free Cd2+ ion at equilibrium when 1.15×10-2 mol cadmium(II) nitrate is added to 1.00 L of solution that is 1.330 M in CN-. For [Cd(CN)4]2-, Kf = 6.0×1018.
D) What is the approximate concentration of free Ag+ ion at equilibrium when 1.72×10-2 mol silver nitrate is added to 1.00 L of solution that is 1.330 M in CN-. For [Ag(CN)2]-, Kf = 1.3×1021.
(I don't know what needs to be updated? This is the question)