a)
\(CH_4+2O_2\rightarrow CO_2+H_2O\)
\(2C_2H_2+5O_2\rightarrow4CO_2+2H_2O\)
\(C_2H_5OH+3O_2\rightarrow2CO_2+3H_2O\)
b)
CH4: \(n_{CO2}=0,5\left(mol\right),n_{H2O}=1\left(mol\right)\)
\(m=0,5.44+1.18=40\left(g\right)\)
C2H2:
\(n_{CO2}=1\left(mol\right),n_{H2O}=0,5\left(mol\right)\)
\(m=1.44+0,5.18=53\left(g\right)\)
C2H5OH
\(n_{CO2}=1\left(mol\right),n_{H2O}=1,5\left(mol\right)\)
\(m=1.44+1,5.18=71\left(g\right)\)
làm chung câu a và b cho dễ hiểu nhé
CH4+2O2--->CO2+2H2O
0,5------------0,5-----1(mol)
m CO2=0,5.44=22(g)
m H2O=1/18=18(g)
2C2H2+5O2--->4CO2+2H2O
0,5----------------1---------0,5(mol)
m CO2=1.44=44(g)
m H2O=0,5.18=9(g)
2C2H5OH+7O2----->4CO2+6H2O
0,5------------------------1--------1,5(mol)
m CO2=1.44=44(g)
m H2O=1.5.18=27(g)