1)CH3OH+CH3COOH=CH3CH3COO+H2O
n(CH3COOH)=6/60=0.1моль
n(CH3OH)=4/32=0.125моль
n(CH3CH3COO)=n(CH3COOH)=0.1моль
m(CH3CH3COO)=0.1*74=7.4г
2)CH2O2+C2H5OH=CH3CH3COO+H2O
n(C2H5OH)=4.6/46=0.1моль
n(СH2O2)=5/46=0.11 моль
n(CH3CH3COO)=n(C2H5OH)=0.1моль
m(CH3CH3COO)=0.1*74=7.4 г