Question

problema 3. multumesc anticipat pentru ajutor :)

Answer 1

-calculez volumul de etena in c.n.
pV=nRT; V=0,5L
6x0,5= nx0,082x300--->n=0,012195mol= 121,95kmol etena
-calculez masa de polietena obtinuta; M,etena= 28g/mol=28kg/kmol
 nCH2=CH2---> -(-CH2-CH2-)-n
1kmol....................1kmol
121,95kmol...................121,95kmol;
m=nxM; mteoretic=121,95x28= 3414,6kg , daca randamentul este 100%
m,practic= 3414,6x80/100=...........................calculeaza !

-calculez masa depoliclorura de vinil, M,C2H3Cl= 62,5kg/kmol
1kmol etena..................1 kmol PVC
121,95kmol......................121,95kmol
m,teoretic= 121,95x 62,5=7621,87kg, daca randamentul este 100%
m,practic= 7621,87x80/100..........................calculeaza !!