What mass of K2C2O4·H2O is needed so that, when it is titrated with a 0.01 M MnO4- solution, the equivalence point is reached at 20.00 mL of added titrant? I'm confused with how you set this up since it is asking for mass in grams and it doesn't give you molarity of K2C2O4. Can someone help me with this? Point me in the right direction?