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Q.

55 g Ba(MnO4)2 sample containing inert impurity is completely reduced with 100 mL of 56 vol strength of H2O2 in acid medium, then what will be the percentage purity of  Ba(MnO4)2 in the sample ?

(Ba-137, Mn-55)

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a

68.18%

b

40%

c

10%

d

25%

answer is D.

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Detailed Solution

m .eq of  Ba(MnO4)2= m. eq of  H2O2  
w375/10=56×100/5.61000 

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