1.Consider the following insoluble salt: Cd(OH)2. Would doing the following make it more soluble or less soluble in water?

1.Consider the following insoluble salt: Cd(OH)2. Would doing the following make it more soluble or less soluble in water? Explain your reasoning. 

a. Addition of Cd(NO3)2, a soluble salt

b. Addition of HCl, a strong acid

c. Addition of NaOH, a strong base 

2.Consider a saturated solution of calcium phosphate (Ca3(PO4)2) Ksp = 2 x 10-33. What would be the required concentration of phosphate ion (PO4-2) in order to reduce the Ca+2 concentration to 1 x 10-9 M?