2CH3OH +3O2 --> 2CO2
+4H2O
n(CH3OH) = 6.4/32 = 0.2 Моль
n(O2) = 3/2*n(CH3OH) = 3/2*0.2 = 0.3 Моль
V(O2) = 22.4*0.3 = 6.72 л
ответ: 6.72 л
2CH3OH +3O2 --> 2CO2
+4H2O
n(CH3OH) = 6.4/32 = 0.2 Моль
n(O2) = 3/2*n(CH3OH) = 3/2*0.2 = 0.3 Моль
V(O2) = 22.4*0.3 = 6.72 л
ответ: 6.72 л