10 g of oxalate was dissolved in 300 mL of solution. This solution required 250 mL of `(M/10)KMnO_(4)`in acidic medium for complete oxidation. The percentage purity of oxalate ion in the salt is :

0.3 g of an oxalate salts was dissolved in 100 mL solution. The solution required 90 mL of N//20 KMnO_(4) for complete oxidation. The % of oxalate ion in salt is:

0.3 g of an oxalate salt was dissolved in 100 ml solution. The solution required 90 m! of N/20KMnO_4 for complete oxidation. The % of oxalate ion in salt is

0.5 g of an oxalate was dissolved in water and the solution made to 100 mL. On titration 10 mL of this solution required 15 mL of (N)/(20)KMnO_(4) . Calculate the percentage of oxalate in the sample .

0.592 g of calcium oxalate was dissolved in dilute acid and the solution was made up to 250 mL. 25 mL of this solution required 8.375 mL of 0.1 N KMnO_4 solution for complete oxidation. Calculate the percentage of calcium oxalate in calcium oxalate sample.

A solution of impure KMnO_4 is prepared by dissolving 2g of it in IL of the solution. 20 ml of this solution required 24.2 ml of N/(20) sodium oxalate solution. The percentage purity of KMnO_4 sample is :

The weight of oxalic acid required to reduce 80 ml of 0.4 M KMnO_(4) in acidic medium is