Question

POST-LABORATORY QUESTIONS student analyzed a saturated CaF2 solution by the ion-exchange chromatography/titration method and found that [Ca] 2.14 x 10 M. Write out the expression for Ksp of CaF and determine the numerical value of Ksp Suppose a student overtitrates the eluent from the CaSO, experiment (that is, she titrates to a persistent deep pink endpoint). Will the calculated value of Ksp be too high, too low, or unaffected? Explain. 2. 3. The value of Kp for lead (lIl) chromate is 2.8 x 101 at 25°C. Determine the equilibrium concentrations of lead cation and chromate anion in a saturated solution of lead (II) chromate. 91

Answer 1

2, 2 + tee 2 + k. 2 Fon titration af Co.Soy if then olution an 13 SP