Amestec echimolecular => 0,04moli propena si 0,04moli 2-butena
1mol................................60g
CH2=CH-CH3 + 5[O] -> CH3-COOH + CO2 + H2O
0,04moli.........................2,4g
1mol.......................................2*60g
CH3-CH=CH-CH3 + 4[O] -> 2CH3-COOH
0,04moli.................................4,8g
macid=7,2g=md
ms=md+mapa=7,2+192,8=200g
c=md*100/ms=7,2*100/200=3,6%