三草酸合铁(III)酸钾
来源：五一七教育网
MKMnO158.0339mol/L一、KMnO4溶液的配制和标定( )配制m(KMnO4)V(H2O)棕色瓶2.8g300ml4M =134.0Na2C2O4mNa2C2O4VKMnO40.4120g19.40ml标定KMnO40.4822g22.41ml0.4862g22.67mlCKMnO4平均浓度0.06340.020.01mol/L0.00二、KMnO4滴定法测定配合物中草酸根含量（理论上草酸根的含量为53.75%）M 草酸根= 88m(样品)VKMnO4m草酸根含量误差0.5020g19.11ml0.2695g53.69%-0.11%滴定草酸根0.5091g19.40ml0.2736g53.74%-0.02%0.6181g23.60ml0.3328g53.79%0.07%三、KMnO4滴定法测定配合物中铁离子含量(理论铁离子的含量为11.37%)m(样品)VKMnO4m铁离子含量误差0.5020g3.22ml0.0576g11.48%0.97%滴定铁离子0.5091g3.27ml 0.0585g11.49%1.06%0.6181g4.02ml0.0720g11.65%2.46%