A 10.00mL aliquot of a weak base is titrated with HCL. The equivalence point is reached after 17.21mL of 0.4332 mol/L HCL has been added. The pH is equal to 10.03 after 5.00mL of HCL was added. Determine
i) the initial molarity of the weak base
ii) Kb of the weak base from the data given in the buffer region
iii) the initial pH
iv) the equivalence point pH