5CH2=C=CH2 + 12KMnO4 + 18H2SO4 => 5HOOC-C(=O)-COOH + 6K2SO4 + 12MnSO4 + 23H2O
C(-2) -5e=> C(+3) ||5
C(0) -2e=> C(+2) ||5
C(-2) -5e=> C(+3) ||5
Mn(+7) +5e=> Mn(+2) ||12
n=m/M=200/40=5 moli C3H4
5 moli C3H4.................12 moli KMnO4
5 moli C3H4.................12 moli KMnO4
Cm=n/Vs=>Vs=n/Cm=12/0,4 = 30 L KMnO4