НСООН+NaOH=HCOONa+H2O
CH3COOH+NaOH=CH3COONa+H2O
n(HCOOH)=x m(HCOOH)= 46x n1(NaOH)=x
n(CH3COOH)=y m(CH3COOH)=60 y n2(NaOH)=y
n(NaOH)=8г:40г/моль=0,2 моль
система уравнений
46х+60у=10,8
х+у=0.2
х=0.857
у=0.1143
m(HCOOH)=46*0.857=3.9422г
m(CH3COOH)=60*0.1143=6.858г