PTHH: 2CH3COOH+Mg → (CH3COO)2Mg+H2
n(CH3COO)2Mg=2,13/142=0,015mol
=> nCH3COOH=0,015.2=0,03mol
=> CM(CH3COOH)=0,03/0,075=0,4M
=> nH2=n(CH3COO)2Mg=0,015mol
⇒VH2=0,015.22,4=0,336l
PTHH : CH3COOH+NaOH → CH3COONa+H2O
=> nNaOH=nCH3COOH=0,03mol
=> VNaOH=0,03/0,5=0,06l=60ml