Mass of KxFe(C2O4)y · zH2O : 4.70 g Mass of sample : 0.175 g Mass of FeCl3 used in preparation : 1.60 g Molarity of standard NaOH used : 0.100 V1, volume of standard NaOH required for first equivalence point : 7.750 mL V2, volume of standard NaOH required for second equivalence point : 19.70 mL Calculate the percent of potassium in the sample :

Question

Mass of KxFe(C2O4)y · zH2: 4.70 g

Mass of sample : 0.175 g

Mass of FeCl3 used in preparation : 1.60 g

Molarity of standard NaOH used : 0.100

V1, volume of standard NaOH required for first equivalence point : 7.750 mL

V2, volume of standard NaOH required for second equivalence point : 19.70 mL

Calculate the percent of potassium in the sample :

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