a) PTHH: \(Fe_2O_3+3CO\xrightarrow[]{t^o}2Fe+3CO_2\)
b) Theo ĐLBTKL:
\(m_{Fe_2O_3}+m_{CO}=m_{Fe}+m_{CO_2}\)
=> \(a=m_{CO_2}=8,4+16-11,2=13,2\left(g\right)\)
c) \(n_{CO}=\dfrac{m}{M}=\dfrac{8,4}{28}=0,3\left(mol\right)\)
d) \(n_{CO_2}=\dfrac{m}{M}=\dfrac{13,2}{44}=0,3\left(mol\right)\)
=> \(V_{CO_2\left(đktc\right)}=n.22,4=0,3.22,4=6,72\left(l\right)\)