If 24.0 ml of 0.0100 M KMNO4 solution is needed to titrate 1.00 g of a sample of H2C204 to the equivalence point, what is the percent by mass of H2C204 in the sample? The net ionic equation is: 2MNO,¯ + 6H* + 5H,C,04 - 2Mn2- + 10cO2 + 8H20 O 54.0 % O 2.40 % O 5.40 % O 3.69 %

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