3C2H2+10KMnO4+2H2O= 6CO2+10MnO2+10KOH
3 10
n(MnO2)=26,1 :87=0,3моль;
n(C2H2)=0,3*3 :10=0,09моль;
V(C2H2)=0,09*22,4=2,016л.
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