[Athletexxx]

Hello, so I titrated 0.104 grams of K₃[Fe(C₂O₄)₃] * 3H20 with 0.0257 Liters of a Permanganate solution of 0.0099 M. I am supposed to calculated the percent my mass of Oxalate (the C2O4) in K₃[Fe(C₂O₄)₃] *3H20 from this titration result (0.0257 L), but I just cannot seem to figure out how to. Can someone help me understand the steps on how to do this? Let me add that there is a 5 mol of oxalate to 2 mol of Permanganate mole ratio.

[Borek]

Start with the reaction equation.

[Vidya]

It is a redox reaction so first you write down balanced equation.Follow these steps :
 
From given molarity and volume in litres------>moles of permanganate used in titrations
using  molar ratio of permanganate and oxalate ion in balanced reaction  get
                              -----> moles of oxalate ion-----> grams of oxalate ion ---->% mass of oxalate     ion