First slide
Equivalent weights
Question

‘V’ litres of 0.5 M KMnO4 can completely oxidise 5 litres of 0.2 M oxalic acid in acidic medium. The value of ‘V’ is

Moderate
Solution

V1N1(KMnO4)=V2N2(H2C2O4) ;

V1(n1)M1(KMnO4)=V2(n2)M2(H2C2O4) ;

V(5)0.5 (KMnO4)=5(2)0.2(H2C2O4) ; 

V= 0.8 litres ;

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