Răspuns :
M,Fe=56g/mol M,CO=28g/mol M,feO= 72g/mol
calculez masa de C pur
p= m,px100/m,i---> m,p= 40x100/100g= 40g C pur
calculez masa C,FeO si Fe ,teoretica,din ecuatia
1mol.....1mol....1mol... 1mol sau in grame
FeO + C---> CO + Fe
72g.. 12g......28g.....56g
Z.. 40g...x...........y
x= 93,33g CO
y=186,6gFe
Z=240g FeO
calculez masa practica de CO ,din reactia, stiind moli CO2 OBTINUTI
niu=V/Vm= 44,8l/22,4l/mol=2molCO2
1mol................1mol
CO + 1/2O---> CO2
x.........................2mol
x=2molCO> m=niuXM= 2X28g=56gCO MASA PRACTICA
randamentul primei reactii=m,px100/m,t= 56x100/93,33=60%
m,practica de Fe= 186,6x60/100g= 112g Fe
masa practica de FeO consumata=240X60/100g= 144gFeo