First slide
Equivalent weights
Question

‘V’ litres of 0.2 M KMnO4 can completely oxidise 5 litres of 0.4 M stannous sulphate in acidic medium. The value of ‘V’ is

Moderate
Solution

V1N1(KMnO4)=V2N2(SnSO4) ;

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

V(5)0.2=5(2)0.4 ; 

V= 4 litres ;

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