a, \(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
b, \(n_{Fe}=\dfrac{24}{56}=\dfrac{3}{7}\left(mol\right)\)
Theo PT: \(n_{Fe_2O_3}=\dfrac{1}{2}n_{Fe}=\dfrac{3}{14}\left(mol\right)\Rightarrow m_{Fe_2O_3}=\dfrac{3}{14}.160=\dfrac{240}{7}\left(g\right)\)
c, Theo PT: \(n_{H_2}=\dfrac{3}{2}n_{Fe}=\dfrac{9}{14}\left(mol\right)\Rightarrow V_{H_2}=\dfrac{9}{14}.22,4=14,4\left(l\right)\)
\(n_{Fe}=\dfrac{m}{M}=\dfrac{24}{56}\approx0,43\left(mol\right)\\ a.PTHH:Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
2 3 2 3
0,43 0,645 0,45 0,645
\(b.m_{Fe_2O_3}=n.M=0,43.\left(56.2+16.3\right)=68,8\left(g\right)\\ c.V_{H_2}=n.24,79=0,645.24,79=15,98955\left(l\right).\)
a)\(PTHH:Fe_3O_4+4H_2\xrightarrow[]{}3Fe+4H_2O\)
b)\(m_{Fe}=\dfrac{24}{56}=0,4\left(m\right)\)
\(PTHH:Fe_3O_4+4H_2\xrightarrow[]{}3Fe+4H_2O\)
tỉ lệ :1 4 3 4
số mol :0,13 0,53 0,4 0,53
\(m_{Fe_3O_4}=0,13.232=30,16\left(g\right)\)
c)\(V_{H_2}=0,53.22,4=11,872\left(l\right)\)