CH3CN + 2H2O ⇒ CH3COOH + NH3 (1)
CH3CCl3 + 2H2O ⇒CH3COOH + 3HCl (2)
in (1) : teoretic : nCH3COOH = nCH3CN practic : nCH3COOH = η1·nCH3CN
m/60 = 0,82·m1/41 m1 = 41m/49,2
in (2) : teoretic : nCH3COOH = nCH3CCl3 practic:nCH3COOH= η2·nCH3CCl3
m/60 = 0,6675·m2/133,5 m2 = 133,5m/40,05
m1/m2 = 41m/49,2 · 40,05/(133,5m) = 0,25
m1/m2 = 1/4