100
kg amestec nitrant………….36 kg HNO3
4400 kg amestec nitrant ………….x
x=1584 kg HNO3
Se
noteaza cu m nasa de clorbenzen
C6H5-Cl + HNO3 = Cl-C6H4-NO2+H2O
112,5kg……63kg
m………….x
x = 63m/112,5
Masa amestecului = 4400 + m kg
Dupa reactie masa de HNO3 = 1584 – 63m/112,5 kg
100 kg amestec……………1 kg HNO3
4400+m amestec………….1584-63m/112,5 kg HNO3
4400+m = 158400-6300m/112,5
112,5·4400 + 112,5m=158400·112,5-6300m
6300m + 112,5m = 112,5(158400-4400)
6412,5m = 17325000
m = 2701,75 kg C6H5-Cl