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Q.

A mixture of  H2C2O4  and  K2C2O4 required 0.2 N,   25 mL  KMnO4 solution for complete oxidation same mixture needs  0.2 M , 20 mL NaOH solution for its complete neutralization. Calculate mole percentage of  H2C2O4 in the given mixture.

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Detailed Solution

Let mole of  H2C2O4 and  K2C2O4 are x and y respectively.
Number of equivalent of   H2C2O4 + Number of equivalent of   K2C2O4= Number of equivalent ofKMnO4   

2×x+2y=0.2×25 x+y=2.5

No. of equivalent of  H2C2O4  =    Number of equivalent of NaOH

2x=0.2×20=4   x=2   y=0.5

Mole percentage of    H2C2O4  =  22.5
 

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