Question

ce cantitate de glicol se obtine din 4 tone de oxid de etena de puritate 99% ,cu un randament de fabricatie de 82%?

Answer 1

Aplicam formula puritatii, pentru calcularea masei pure de oxid de etena
99/100=mpura/4000kg
mpura=99*4000/100=3960kg oxid de etena
44kg...................................62kg
CH2-O-CH2 + H2O -> HO-CH2-CH2-OH
3960kg.............................x=5580kg
randament/100=mpractica/mteoretica
82/100=mpractica/5580kg
mpractica=5580*82/100=4575,6kg glicol