dot chay hoan toan 12 sat trong binh chua khi o2
a hay viet phuong trinh hoa hoc cua phan ung
b tinh khoi lung va the tich khi o2da tham gia phan ung tren
dot chay hoan toan 12 sat trong binh chua khi o2 a hay viet phuong trinh hoa hoc cua phan ung b tinh khoi lung va the tich khi o2da tham gia phan un
By Adeline
Đáp án:
$a/$
3Fe + 2O2 -to-> Fe3O4
3/14 1/7
$nFe = 12/56 = 3/14 (mol)$
$b/$
$mO2 = 1/7.32 ≈ 4,57 (g)$
$VO2 = 1/7.22,4 = 3,2 (l)$
$a/$
$PTHH:$
$3Fe + 2O_{2}$ —–> $Fe_{3}O_{4}$
$nFe=12/56=0,2 mol$
$Theo$ $pt: $
$nO2=2/3.nFe=2/3.0,2=0,133mol$
$=> mO2=0,133.32=4,256g$
$V_{O_{2}}=0,133.22,4=2,9792l$