Homework Sourse5000 mL of a saturated solution of calcium oxalate is titrat
50.00 mL of a saturated solution of calcium oxalate is titrated with 0.0015 M potassium permanganate solution. If it takes 3.81 mL of the permanganate solution to titrate the oxalate, what is the Ksp for calcium oxalate?
Solution
(C2O4 ^2-) N1V1 = N2V2 (MnO4 ^-) =>N1(50)=0.0015*3.81 =>N1=0.0001143 M1 = 0.0001143 *2 (where 2 is the no of electrons tranferred) =0.0002286M now, Ksp = [C2O4 ^2-][MnO4 ^-]= 3.429e-7
