n1 moli C6H6 + CH3Cl ⇒C6H5-CH3 + HCl
n2 moli C6H6 + 2CH3Cl ⇒ C6H4(CH3)2 + 2HCl
n3 moli C6H6 nereactionat
n1/1 = n2/2 = n3/3 = n/6 n1 = n/6 n2 = 2n/6 = n/3 n3 = 3n/6 = n/2
m amestec final = 92n1 + 106n2 + 78n3 = 46n/3 + 106n/3 + 39n = 269n/3 = 86,4
n = 259,2/269 m = 259,2/269 ·78 = 75,158g