Question

Calculati masa de acrilonitril care se obtine din reactia a 448m3(metri cubi) acetilena (masurat in conditii normale) cu acidu cianhidric la un randament al reactiei de 75%; Ecuatia reactiei este
HC(leg. tripla)CH+ HCN -> H2C=CH-CN

Answer 1

Scriem ecuatia si calculam masa de acrilornitril
Vmolar=22,4m³/mol iar MC3H3N=12*3+1*3+14=53kg/kmol
22,4m³................53g
C2H2 + HCN -> CH2=CH-CN
448m³................x=?
x=448*53/22,4=1060kg acrilonitril
insa aceasta e cantitatea obtinuta teoretic la randament de 100%
randament/100=mpractica/mteoretica
75/100=mpractica/1060 => mpractica=1060*75/100=795kg acrilonitril