Răspuns:
CH≡CH+HCN---> CH2=CH-CN
2mol 2mol 2mol
daca se obtin 2mol acrilonitril, raman 0,5mol HCN
daca se consuma 50% acetilena, adica 1mol
CH≡CH+HCH--> CH2=CH-CN
1mol 1mol 1mol
raman 2,5-1=> 1,5mol HCN
miu,HCN= 27g/mol----> m= niuxmiu=1,5x27g=40,5gHCN
Explicație: