Determinăm masa de acid azotic: y=156x63/78
Y=126 kg de acid azotic
Pentru a determina amestec nitrant se utilizeaza regula de trei simpla
100 amestec……………………..30 acid azotic
z……………………………………..126
z= 126x100/30
z=420
b) 1 tona amestec nitrant=1000 kg
100amestec….30 acid azotic………60acid sulfuric
1000 ……………..t………………………w
t=300kg acid azotic
w= 600 kg acid sulfuric
c=mdx100/ms
ms= mdx100/c
ms1=300x100/80
ms1=375 kg soluție acid azotic
ms2=600x100/96
ms2=625 kg soluție acid sulfuric